python 字符串和字節互轉換。
bytes(s, encoding = "utf8") str(b, encoding = "utf-8")
i.isspace(): #如果i等于空格返回True

?

int 數字類型

1 class int(object):2 """3 int(x=0) -> int or long4 int(x, base=10) -> int or long5 6 Convert a number or string to an integer, or return 0 if no arguments7 are given. If x is floating point, the conversion truncates towards zero.8 If x is outside the integer range, the function returns a long instead.9 10 If x is not a number or if base is given, then x must be a string or11 Unicode object representing an integer literal in the given base. The12 literal can be preceded by '+' or '-' and be surrounded by whitespace.13 The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to14 interpret the base from the string as an integer literal.15 >>> int('0b100', base=0)16 """17 def bit_length(self): 18 """ 返回表示該數字的時占用的最少位數 """19 """20 int.bit_length() -> int21 22 Number of bits necessary to represent self in binary.23 >>> bin(37)24 '0b100101'25 >>> (37).bit_length()26 """27 return 028 29 def conjugate(self, *args, **kwargs): # real signature unknown30 """ 返回該復數的共軛復數 """31 """ Returns self, the complex conjugate of any int. """32 pass33 34 def __abs__(self):35 """ 返回絕對值 """36 """ x.__abs__() <==> abs(x) """37 pass38 39 def __add__(self, y):40 """ x.__add__(y) <==> x+y """41 pass42 43 def __and__(self, y):44 """ x.__and__(y) <==> x&y """45 pass46 47 def __cmp__(self, y): 48 """ 比較兩個數大小 """49 """ x.__cmp__(y) <==> cmp(x,y) """50 pass51 52 def __coerce__(self, y):53 """ 強制生成一個元組 """ 54 """ x.__coerce__(y) <==> coerce(x, y) """55 pass56 57 def __divmod__(self, y): 58 """ 相除，得到商和余數組成的元組 """ 59 """ x.__divmod__(y) <==> divmod(x, y) """60 pass61 62 def __div__(self, y): 63 """ x.__div__(y) <==> x/y """64 pass65 66 def __float__(self): 67 """ 轉換為浮點類型 """ 68 """ x.__float__() <==> float(x) """69 pass70 71 def __floordiv__(self, y): 72 """ x.__floordiv__(y) <==> x//y """73 pass74 75 def __format__(self, *args, **kwargs): # real signature unknown76 pass77 78 def __getattribute__(self, name): 79 """ x.__getattribute__('name') <==> x.name """80 pass81 82 def __getnewargs__(self, *args, **kwargs): # real signature unknown83 """ 內部調用 __new__方法或創建對象時傳入參數使用 """ 84 pass85 86 def __hash__(self): 87 """如果對象object為哈希表類型，返回對象object的哈希值。哈希值為整數。在字典查找中，哈希值用于快速比較字典的鍵。兩個數值如果相等，則哈希值也相等。"""88 """ x.__hash__() <==> hash(x) """89 pass90 91 def __hex__(self): 92 """ 返回當前數的 十六進制 表示 """ 93 """ x.__hex__() <==> hex(x) """94 pass95 96 def __index__(self): 97 """ 用于切片，數字無意義 """98 """ x[y:z] <==> x[y.__index__():z.__index__()] """99 pass 100 101 def __init__(self, x, base=10): # known special case of int.__init__ 102 """ 構造方法，執行 x = 123 或 x = int(10) 時，自動調用，暫時忽略 """ 103 """ 104 int(x=0) -> int or long 105 int(x, base=10) -> int or long 106 107 Convert a number or string to an integer, or return 0 if no arguments 108 are given. If x is floating point, the conversion truncates towards zero. 109 If x is outside the integer range, the function returns a long instead. 110 111 If x is not a number or if base is given, then x must be a string or 112 Unicode object representing an integer literal in the given base. The 113 literal can be preceded by '+' or '-' and be surrounded by whitespace. 114 The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to 115 interpret the base from the string as an integer literal. 116 >>> int('0b100', base=0) 117 # (copied from class doc) 118 """ 119 pass 120 121 def __int__(self): 122 """ 轉換為整數 """ 123 """ x.__int__() <==> int(x) """ 124 pass 125 126 def __invert__(self): 127 """ x.__invert__() <==> ~x """ 128 pass 129 130 def __long__(self): 131 """ 轉換為長整數 """ 132 """ x.__long__() <==> long(x) """ 133 pass 134 135 def __lshift__(self, y): 136 """ x.__lshift__(y) <==> x<<y """ 137 pass 138 139 def __mod__(self, y): 140 """ x.__mod__(y) <==> x%y """ 141 pass 142 143 def __mul__(self, y): 144 """ x.__mul__(y) <==> x*y """ 145 pass 146 147 def __neg__(self): 148 """ x.__neg__() <==> -x """ 149 pass 150 151 @staticmethod # known case of __new__ 152 def __new__(S, *more): 153 """ T.__new__(S, ...) -> a new object with type S, a subtype of T """ 154 pass 155 156 def __nonzero__(self): 157 """ x.__nonzero__() <==> x != 0 """ 158 pass 159 160 def __oct__(self): 161 """ 返回改值的 八進制 表示 """ 162 """ x.__oct__() <==> oct(x) """ 163 pass 164 165 def __or__(self, y): 166 """ x.__or__(y) <==> x|y """ 167 pass 168 169 def __pos__(self): 170 """ x.__pos__() <==> +x """ 171 pass 172 173 def __pow__(self, y, z=None): 174 """ 冪，次方 """ 175 """ x.__pow__(y[, z]) <==> pow(x, y[, z]) """ 176 pass 177 178 def __radd__(self, y): 179 """ x.__radd__(y) <==> y+x """ 180 pass 181 182 def __rand__(self, y): 183 """ x.__rand__(y) <==> y&x """ 184 pass 185 186 def __rdivmod__(self, y): 187 """ x.__rdivmod__(y) <==> divmod(y, x) """ 188 pass 189 190 def __rdiv__(self, y): 191 """ x.__rdiv__(y) <==> y/x """ 192 pass 193 194 def __repr__(self): 195 """轉化為解釋器可讀取的形式 """ 196 """ x.__repr__() <==> repr(x) """ 197 pass 198 199 def __str__(self): 200 """轉換為人閱讀的形式，如果沒有適于人閱讀的解釋形式的話，則返回解釋器課閱讀的形式""" 201 """ x.__str__() <==> str(x) """ 202 pass 203 204 def __rfloordiv__(self, y): 205 """ x.__rfloordiv__(y) <==> y//x """ 206 pass 207 208 def __rlshift__(self, y): 209 """ x.__rlshift__(y) <==> y<<x """ 210 pass 211 212 def __rmod__(self, y): 213 """ x.__rmod__(y) <==> y%x """ 214 pass 215 216 def __rmul__(self, y): 217 """ x.__rmul__(y) <==> y*x """ 218 pass 219 220 def __ror__(self, y): 221 """ x.__ror__(y) <==> y|x """ 222 pass 223 224 def __rpow__(self, x, z=None): 225 """ y.__rpow__(x[, z]) <==> pow(x, y[, z]) """ 226 pass 227 228 def __rrshift__(self, y): 229 """ x.__rrshift__(y) <==> y>>x """ 230 pass 231 232 def __rshift__(self, y): 233 """ x.__rshift__(y) <==> x>>y """ 234 pass 235 236 def __rsub__(self, y): 237 """ x.__rsub__(y) <==> y-x """ 238 pass 239 240 def __rtruediv__(self, y): 241 """ x.__rtruediv__(y) <==> y/x """ 242 pass 243 244 def __rxor__(self, y): 245 """ x.__rxor__(y) <==> y^x """ 246 pass 247 248 def __sub__(self, y): 249 """ x.__sub__(y) <==> x-y """ 250 pass 251 252 def __truediv__(self, y): 253 """ x.__truediv__(y) <==> x/y """ 254 pass 255 256 def __trunc__(self, *args, **kwargs): 257 """ 返回數值被截取為整形的值，在整形中無意義 """ 258 pass 259 260 def __xor__(self, y): 261 """ x.__xor__(y) <==> x^y """ 262 pass 263 264 denominator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default 265 """ 分母 = 1 """ 266 """the denominator of a rational number in lowest terms""" 267 268 imag = property(lambda self: object(), lambda self, v: None, lambda self: None) # default 269 """ 虛數，無意義 """ 270 """the imaginary part of a complex number""" 271 272 numerator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default 273 """ 分子 = 數字大小 """ 274 """the numerator of a rational number in lowest terms""" 275 276 real = property(lambda self: object(), lambda self, v: None, lambda self: None) # default 277 """ 實屬，無意義 """ 278 """the real part of a complex number""" 279 280 int View Code

?

str 字符串類型的一些方法

1 class str(basestring):2 """3 str(object='') -> string4 5 Return a nice string representation of the object.6 If the argument is a string, the return value is the same object.7 """8 def capitalize(self): 9 """ 首字母變大寫 """10 """11 S.capitalize() -> string12 13 Return a copy of the string S with only its first character14 capitalized.15 """16 return ""17 18 def center(self, width, fillchar=None): 19 """ 內容居中，width：總長度；fillchar：空白處填充內容，默認無 """20 """21 S.center(width[, fillchar]) -> string22 23 Return S centered in a string of length width. Padding is24 done using the specified fill character (default is a space)25 """26 return ""27 28 def count(self, sub, start=None, end=None): 29 """ 子序列個數 """30 """31 S.count(sub[, start[, end]]) -> int32 33 Return the number of non-overlapping occurrences of substring sub in34 string S[start:end]. Optional arguments start and end are interpreted35 as in slice notation.36 """37 return 038 39 def decode(self, encoding=None, errors=None): 40 """ 解碼 """41 """42 S.decode([encoding[,errors]]) -> object43 44 Decodes S using the codec registered for encoding. encoding defaults45 to the default encoding. errors may be given to set a different error46 handling scheme. Default is 'strict' meaning that encoding errors raise47 a UnicodeDecodeError. Other possible values are 'ignore' and 'replace'48 as well as any other name registered with codecs.register_error that is49 able to handle UnicodeDecodeErrors.50 """51 return object()52 53 def encode(self, encoding=None, errors=None): 54 """ 編碼，針對unicode """55 """56 S.encode([encoding[,errors]]) -> object57 58 Encodes S using the codec registered for encoding. encoding defaults59 to the default encoding. errors may be given to set a different error60 handling scheme. Default is 'strict' meaning that encoding errors raise61 a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and62 'xmlcharrefreplace' as well as any other name registered with63 codecs.register_error that is able to handle UnicodeEncodeErrors.64 """65 return object()66 67 def endswith(self, suffix, start=None, end=None): 68 """ 是否以 xxx 結束 """69 """70 S.endswith(suffix[, start[, end]]) -> bool71 72 Return True if S ends with the specified suffix, False otherwise.73 With optional start, test S beginning at that position.74 With optional end, stop comparing S at that position.75 suffix can also be a tuple of strings to try.76 """77 return False78 79 def expandtabs(self, tabsize=None): 80 """ 將tab轉換成空格，默認一個tab轉換成8個空格 """81 """82 S.expandtabs([tabsize]) -> string83 84 Return a copy of S where all tab characters are expanded using spaces.85 If tabsize is not given, a tab size of 8 characters is assumed.86 """87 return ""88 89 def find(self, sub, start=None, end=None): 90 """ 尋找子序列位置，如果沒找到，返回 -1 """91 """92 S.find(sub [,start [,end]]) -> int93 94 Return the lowest index in S where substring sub is found,95 such that sub is contained within S[start:end]. Optional96 arguments start and end are interpreted as in slice notation.97 98 Return -1 on failure.99 """ 100 return 0 101 102 def format(*args, **kwargs): # known special case of str.format 103 """ 字符串格式化，動態參數，將函數式編程時細說 """ 104 """ 105 S.format(*args, **kwargs) -> string 106 107 Return a formatted version of S, using substitutions from args and kwargs. 108 The substitutions are identified by braces ('{' and '}'). 109 """ 110 pass 111 112 def index(self, sub, start=None, end=None): 113 """ 子序列位置，如果沒找到，報錯 """ 114 S.index(sub [,start [,end]]) -> int 115 116 Like S.find() but raise ValueError when the substring is not found. 117 """ 118 return 0 119 120 def isalnum(self): 121 """ 是否是字母和數字 """ 122 """ 123 S.isalnum() -> bool 124 125 Return True if all characters in S are alphanumeric 126 and there is at least one character in S, False otherwise. 127 """ 128 return False 129 130 def isalpha(self): 131 """ 是否是字母 """ 132 """ 133 S.isalpha() -> bool 134 135 Return True if all characters in S are alphabetic 136 and there is at least one character in S, False otherwise. 137 """ 138 return False 139 140 def isdigit(self): 141 """ 是否是數字 """ 142 """ 143 S.isdigit() -> bool 144 145 Return True if all characters in S are digits 146 and there is at least one character in S, False otherwise. 147 """ 148 return False 149 150 def islower(self): 151 """ 是否小寫 """ 152 """ 153 S.islower() -> bool 154 155 Return True if all cased characters in S are lowercase and there is 156 at least one cased character in S, False otherwise. 157 """ 158 return False 159 160 def isspace(self): 161 """ 162 S.isspace() -> bool 163 164 Return True if all characters in S are whitespace 165 and there is at least one character in S, False otherwise. 166 """ 167 return False 168 169 def istitle(self): 170 """ 171 S.istitle() -> bool 172 173 Return True if S is a titlecased string and there is at least one 174 character in S, i.e. uppercase characters may only follow uncased 175 characters and lowercase characters only cased ones. Return False 176 otherwise. 177 """ 178 return False 179 180 def isupper(self): 181 """ 182 S.isupper() -> bool 183 184 Return True if all cased characters in S are uppercase and there is 185 at least one cased character in S, False otherwise. 186 """ 187 return False 188 189 def join(self, iterable): 190 """ 連接 """ 191 """ 192 S.join(iterable) -> string 193 194 Return a string which is the concatenation of the strings in the 195 iterable. The separator between elements is S. 196 """ 197 return "" 198 199 def ljust(self, width, fillchar=None): 200 """ 內容左對齊，右側填充 """ 201 """ 202 S.ljust(width[, fillchar]) -> string 203 204 Return S left-justified in a string of length width. Padding is 205 done using the specified fill character (default is a space). 206 """ 207 return "" 208 209 def lower(self): 210 """ 變小寫 """ 211 """ 212 S.lower() -> string 213 214 Return a copy of the string S converted to lowercase. 215 """ 216 return "" 217 218 def lstrip(self, chars=None): 219 """ 移除左側空白 """ 220 """ 221 S.lstrip([chars]) -> string or unicode 222 223 Return a copy of the string S with leading whitespace removed. 224 If chars is given and not None, remove characters in chars instead. 225 If chars is unicode, S will be converted to unicode before stripping 226 """ 227 return "" 228 229 def partition(self, sep): 230 """ 分割，前，中，后三部分 """ 231 """ 232 S.partition(sep) -> (head, sep, tail) 233 234 Search for the separator sep in S, and return the part before it, 235 the separator itself, and the part after it. If the separator is not 236 found, return S and two empty strings. 237 """ 238 pass 239 240 def replace(self, old, new, count=None): 241 """ 替換 """ 242 """ 243 S.replace(old, new[, count]) -> string 244 245 Return a copy of string S with all occurrences of substring 246 old replaced by new. If the optional argument count is 247 given, only the first count occurrences are replaced. 248 """ 249 return "" 250 251 def rfind(self, sub, start=None, end=None): 252 """ 253 S.rfind(sub [,start [,end]]) -> int 254 255 Return the highest index in S where substring sub is found, 256 such that sub is contained within S[start:end]. Optional 257 arguments start and end are interpreted as in slice notation. 258 259 Return -1 on failure. 260 """ 261 return 0 262 263 def rindex(self, sub, start=None, end=None): 264 """ 265 S.rindex(sub [,start [,end]]) -> int 266 267 Like S.rfind() but raise ValueError when the substring is not found. 268 """ 269 return 0 270 271 def rjust(self, width, fillchar=None): 272 """ 273 S.rjust(width[, fillchar]) -> string 274 275 Return S right-justified in a string of length width. Padding is 276 done using the specified fill character (default is a space) 277 """ 278 return "" 279 280 def rpartition(self, sep): 281 """ 282 S.rpartition(sep) -> (head, sep, tail) 283 284 Search for the separator sep in S, starting at the end of S, and return 285 the part before it, the separator itself, and the part after it. If the 286 separator is not found, return two empty strings and S. 287 """ 288 pass 289 290 def rsplit(self, sep=None, maxsplit=None): 291 """ 292 S.rsplit([sep [,maxsplit]]) -> list of strings 293 294 Return a list of the words in the string S, using sep as the 295 delimiter string, starting at the end of the string and working 296 to the front. If maxsplit is given, at most maxsplit splits are 297 done. If sep is not specified or is None, any whitespace string 298 is a separator. 299 """ 300 return [] 301 302 def rstrip(self, chars=None): 303 """ 304 S.rstrip([chars]) -> string or unicode 305 306 Return a copy of the string S with trailing whitespace removed. 307 If chars is given and not None, remove characters in chars instead. 308 If chars is unicode, S will be converted to unicode before stripping 309 """ 310 return "" 311 312 def split(self, sep=None, maxsplit=None): 313 """ 分割， maxsplit最多分割幾次 """ 314 """ 315 S.split([sep [,maxsplit]]) -> list of strings 316 317 Return a list of the words in the string S, using sep as the 318 delimiter string. If maxsplit is given, at most maxsplit 319 splits are done. If sep is not specified or is None, any 320 whitespace string is a separator and empty strings are removed 321 from the result. 322 """ 323 return [] 324 325 def splitlines(self, keepends=False): 326 """ 根據換行分割 """ 327 """ 328 S.splitlines(keepends=False) -> list of strings 329 330 Return a list of the lines in S, breaking at line boundaries. 331 Line breaks are not included in the resulting list unless keepends 332 is given and true. 333 """ 334 return [] 335 336 def startswith(self, prefix, start=None, end=None): 337 """ 是否起始 """ 338 """ 339 S.startswith(prefix[, start[, end]]) -> bool 340 341 Return True if S starts with the specified prefix, False otherwise. 342 With optional start, test S beginning at that position. 343 With optional end, stop comparing S at that position. 344 prefix can also be a tuple of strings to try. 345 """ 346 return False 347 348 def strip(self, chars=None): 349 """ 移除兩段空白 """ 350 """ 351 S.strip([chars]) -> string or unicode 352 353 Return a copy of the string S with leading and trailing 354 whitespace removed. 355 If chars is given and not None, remove characters in chars instead. 356 If chars is unicode, S will be converted to unicode before stripping 357 """ 358 return "" 359 360 def swapcase(self): 361 """ 大寫變小寫，小寫變大寫 """ 362 """ 363 S.swapcase() -> string 364 365 Return a copy of the string S with uppercase characters 366 converted to lowercase and vice versa. 367 """ 368 return "" 369 370 def title(self): 371 """ 372 S.title() -> string 373 374 Return a titlecased version of S, i.e. words start with uppercase 375 characters, all remaining cased characters have lowercase. 376 """ 377 return "" 378 379 def translate(self, table, deletechars=None): 380 """ 381 轉換，需要先做一個對應表，最后一個表示刪除字符集合 382 intab = "aeiou" 383 outtab = "12345" 384 trantab = maketrans(intab, outtab) 385 str = "this is string example....wow!!!" 386 print str.translate(trantab, 'xm') 387 """ 388 389 """ 390 S.translate(table [,deletechars]) -> string 391 392 Return a copy of the string S, where all characters occurring 393 in the optional argument deletechars are removed, and the 394 remaining characters have been mapped through the given 395 translation table, which must be a string of length 256 or None. 396 If the table argument is None, no translation is applied and 397 the operation simply removes the characters in deletechars. 398 """ 399 return "" 400 401 def upper(self): 402 """ 403 S.upper() -> string 404 405 Return a copy of the string S converted to uppercase. 406 """ 407 return "" 408 409 def zfill(self, width): 410 """方法返回指定長度的字符串，原字符串右對齊，前面填充0。""" 411 """ 412 S.zfill(width) -> string 413 414 Pad a numeric string S with zeros on the left, to fill a field 415 of the specified width. The string S is never truncated. 416 """ 417 return "" 418 419 def _formatter_field_name_split(self, *args, **kwargs): # real signature unknown 420 pass 421 422 def _formatter_parser(self, *args, **kwargs): # real signature unknown 423 pass 424 425 def __add__(self, y): 426 """ x.__add__(y) <==> x+y """ 427 pass 428 429 def __contains__(self, y): 430 """ x.__contains__(y) <==> y in x """ 431 pass 432 433 def __eq__(self, y): 434 """ x.__eq__(y) <==> x==y """ 435 pass 436 437 def __format__(self, format_spec): 438 """ 439 S.__format__(format_spec) -> string 440 441 Return a formatted version of S as described by format_spec. 442 """ 443 return "" 444 445 def __getattribute__(self, name): 446 """ x.__getattribute__('name') <==> x.name """ 447 pass 448 449 def __getitem__(self, y): 450 """ x.__getitem__(y) <==> x[y] """ 451 pass 452 453 def __getnewargs__(self, *args, **kwargs): # real signature unknown 454 pass 455 456 def __getslice__(self, i, j): 457 """ 458 x.__getslice__(i, j) <==> x[i:j] 459 460 Use of negative indices is not supported. 461 """ 462 pass 463 464 def __ge__(self, y): 465 """ x.__ge__(y) <==> x>=y """ 466 pass 467 468 def __gt__(self, y): 469 """ x.__gt__(y) <==> x>y """ 470 pass 471 472 def __hash__(self): 473 """ x.__hash__() <==> hash(x) """ 474 pass 475 476 def __init__(self, string=''): # known special case of str.__init__ 477 """ 478 str(object='') -> string 479 480 Return a nice string representation of the object. 481 If the argument is a string, the return value is the same object. 482 # (copied from class doc) 483 """ 484 pass 485 486 def __len__(self): 487 """ x.__len__() <==> len(x) """ 488 pass 489 490 def __le__(self, y): 491 """ x.__le__(y) <==> x<=y """ 492 pass 493 494 def __lt__(self, y): 495 """ x.__lt__(y) <==> x<y """ 496 pass 497 498 def __mod__(self, y): 499 """ x.__mod__(y) <==> x%y """ 500 pass 501 502 def __mul__(self, n): 503 """ x.__mul__(n) <==> x*n """ 504 pass 505 506 @staticmethod # known case of __new__ 507 def __new__(S, *more): 508 """ T.__new__(S, ...) -> a new object with type S, a subtype of T """ 509 pass 510 511 def __ne__(self, y): 512 """ x.__ne__(y) <==> x!=y """ 513 pass 514 515 def __repr__(self): 516 """ x.__repr__() <==> repr(x) """ 517 pass 518 519 def __rmod__(self, y): 520 """ x.__rmod__(y) <==> y%x """ 521 pass 522 523 def __rmul__(self, n): 524 """ x.__rmul__(n) <==> n*x """ 525 pass 526 527 def __sizeof__(self): 528 """ S.__sizeof__() -> size of S in memory, in bytes """ 529 pass 530 531 def __str__(self): 532 """ x.__str__() <==> str(x) """ 533 pass 534 535 str View Code

?

LIST 列表類型

1 class list(object):2 """3 list() -> new empty list4 list(iterable) -> new list initialized from iterable's items5 """6 def append(self, p_object): # real signature unknown; restored from __doc__7 """ L.append(object) -- append object to end """8 pass9 10 def count(self, value): # real signature unknown; restored from __doc__11 """ L.count(value) -> integer -- return number of occurrences of value """12 return 013 14 def extend(self, iterable): # real signature unknown; restored from __doc__15 """ L.extend(iterable) -- extend list by appending elements from the iterable """16 pass17 18 def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__19 """20 L.index(value, [start, [stop]]) -> integer -- return first index of value.21 Raises ValueError if the value is not present.22 """23 return 024 25 def insert(self, index, p_object): # real signature unknown; restored from __doc__26 """ L.insert(index, object) -- insert object before index """27 pass28 29 def pop(self, index=None): # real signature unknown; restored from __doc__30 """31 L.pop([index]) -> item -- remove and return item at index (default last).32 Raises IndexError if list is empty or index is out of range.33 """34 pass35 36 def remove(self, value): # real signature unknown; restored from __doc__37 """38 L.remove(value) -- remove first occurrence of value.39 Raises ValueError if the value is not present.40 """41 pass42 43 def reverse(self): # real signature unknown; restored from __doc__44 """ L.reverse() -- reverse *IN PLACE* """45 pass46 47 def sort(self, cmp=None, key=None, reverse=False): # real signature unknown; restored from __doc__48 """49 L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;50 cmp(x, y) -> -1, 0, 151 """52 pass53 54 def __add__(self, y): # real signature unknown; restored from __doc__55 """ x.__add__(y) <==> x+y """56 pass57 58 def __contains__(self, y): # real signature unknown; restored from __doc__59 """ x.__contains__(y) <==> y in x """60 pass61 62 def __delitem__(self, y): # real signature unknown; restored from __doc__63 """ x.__delitem__(y) <==> del x[y] """64 pass65 66 def __delslice__(self, i, j): # real signature unknown; restored from __doc__67 """68 x.__delslice__(i, j) <==> del x[i:j]69 70 Use of negative indices is not supported.71 """72 pass73 74 def __eq__(self, y): # real signature unknown; restored from __doc__75 """ x.__eq__(y) <==> x==y """76 pass77 78 def __getattribute__(self, name): # real signature unknown; restored from __doc__79 """ x.__getattribute__('name') <==> x.name """80 pass81 82 def __getitem__(self, y): # real signature unknown; restored from __doc__83 """ x.__getitem__(y) <==> x[y] """84 pass85 86 def __getslice__(self, i, j): # real signature unknown; restored from __doc__87 """88 x.__getslice__(i, j) <==> x[i:j]89 90 Use of negative indices is not supported.91 """92 pass93 94 def __ge__(self, y): # real signature unknown; restored from __doc__95 """ x.__ge__(y) <==> x>=y """96 pass97 98 def __gt__(self, y): # real signature unknown; restored from __doc__99 """ x.__gt__(y) <==> x>y """ 100 pass 101 102 def __iadd__(self, y): # real signature unknown; restored from __doc__ 103 """ x.__iadd__(y) <==> x+=y """ 104 pass 105 106 def __imul__(self, y): # real signature unknown; restored from __doc__ 107 """ x.__imul__(y) <==> x*=y """ 108 pass 109 110 def __init__(self, seq=()): # known special case of list.__init__ 111 """ 112 list() -> new empty list 113 list(iterable) -> new list initialized from iterable's items 114 # (copied from class doc) 115 """ 116 pass 117 118 def __iter__(self): # real signature unknown; restored from __doc__ 119 """ x.__iter__() <==> iter(x) """ 120 pass 121 122 def __len__(self): # real signature unknown; restored from __doc__ 123 """ x.__len__() <==> len(x) """ 124 pass 125 126 def __le__(self, y): # real signature unknown; restored from __doc__ 127 """ x.__le__(y) <==> x<=y """ 128 pass 129 130 def __lt__(self, y): # real signature unknown; restored from __doc__ 131 """ x.__lt__(y) <==> x<y """ 132 pass 133 134 def __mul__(self, n): # real signature unknown; restored from __doc__ 135 """ x.__mul__(n) <==> x*n """ 136 pass 137 138 @staticmethod # known case of __new__ 139 def __new__(S, *more): # real signature unknown; restored from __doc__ 140 """ T.__new__(S, ...) -> a new object with type S, a subtype of T """ 141 pass 142 143 def __ne__(self, y): # real signature unknown; restored from __doc__ 144 """ x.__ne__(y) <==> x!=y """ 145 pass 146 147 def __repr__(self): # real signature unknown; restored from __doc__ 148 """ x.__repr__() <==> repr(x) """ 149 pass 150 151 def __reversed__(self): # real signature unknown; restored from __doc__ 152 """ L.__reversed__() -- return a reverse iterator over the list """ 153 pass 154 155 def __rmul__(self, n): # real signature unknown; restored from __doc__ 156 """ x.__rmul__(n) <==> n*x """ 157 pass 158 159 def __setitem__(self, i, y): # real signature unknown; restored from __doc__ 160 """ x.__setitem__(i, y) <==> x[i]=y """ 161 pass 162 163 def __setslice__(self, i, j, y): # real signature unknown; restored from __doc__ 164 """ 165 x.__setslice__(i, j, y) <==> x[i:j]=y 166 167 Use of negative indices is not supported. 168 """ 169 pass 170 171 def __sizeof__(self): # real signature unknown; restored from __doc__ 172 """ L.__sizeof__() -- size of L in memory, in bytes """ 173 pass 174 175 __hash__ = None 176 177 list View Code

?

tuple 元組類型

1 lass tuple(object):2 """3 tuple() -> empty tuple4 tuple(iterable) -> tuple initialized from iterable's items5 6 If the argument is a tuple, the return value is the same object.7 """8 def count(self, value): # real signature unknown; restored from __doc__9 """ T.count(value) -> integer -- return number of occurrences of value """10 return 011 12 def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__13 """14 T.index(value, [start, [stop]]) -> integer -- return first index of value.15 Raises ValueError if the value is not present.16 """17 return 018 19 def __add__(self, y): # real signature unknown; restored from __doc__20 """ x.__add__(y) <==> x+y """21 pass22 23 def __contains__(self, y): # real signature unknown; restored from __doc__24 """ x.__contains__(y) <==> y in x """25 pass26 27 def __eq__(self, y): # real signature unknown; restored from __doc__28 """ x.__eq__(y) <==> x==y """29 pass30 31 def __getattribute__(self, name): # real signature unknown; restored from __doc__32 """ x.__getattribute__('name') <==> x.name """33 pass34 35 def __getitem__(self, y): # real signature unknown; restored from __doc__36 """ x.__getitem__(y) <==> x[y] """37 pass38 39 def __getnewargs__(self, *args, **kwargs): # real signature unknown40 pass41 42 def __getslice__(self, i, j): # real signature unknown; restored from __doc__43 """44 x.__getslice__(i, j) <==> x[i:j]45 46 Use of negative indices is not supported.47 """48 pass49 50 def __ge__(self, y): # real signature unknown; restored from __doc__51 """ x.__ge__(y) <==> x>=y """52 pass53 54 def __gt__(self, y): # real signature unknown; restored from __doc__55 """ x.__gt__(y) <==> x>y """56 pass57 58 def __hash__(self): # real signature unknown; restored from __doc__59 """ x.__hash__() <==> hash(x) """60 pass61 62 def __init__(self, seq=()): # known special case of tuple.__init__63 """64 tuple() -> empty tuple65 tuple(iterable) -> tuple initialized from iterable's items66 67 If the argument is a tuple, the return value is the same object.68 # (copied from class doc)69 """70 pass71 72 def __iter__(self): # real signature unknown; restored from __doc__73 """ x.__iter__() <==> iter(x) """74 pass75 76 def __len__(self): # real signature unknown; restored from __doc__77 """ x.__len__() <==> len(x) """78 pass79 80 def __le__(self, y): # real signature unknown; restored from __doc__81 """ x.__le__(y) <==> x<=y """82 pass83 84 def __lt__(self, y): # real signature unknown; restored from __doc__85 """ x.__lt__(y) <==> x<y """86 pass87 88 def __mul__(self, n): # real signature unknown; restored from __doc__89 """ x.__mul__(n) <==> x*n """90 pass91 92 @staticmethod # known case of __new__93 def __new__(S, *more): # real signature unknown; restored from __doc__94 """ T.__new__(S, ...) -> a new object with type S, a subtype of T """95 pass96 97 def __ne__(self, y): # real signature unknown; restored from __doc__98 """ x.__ne__(y) <==> x!=y """99 pass 100 101 def __repr__(self): # real signature unknown; restored from __doc__ 102 """ x.__repr__() <==> repr(x) """ 103 pass 104 105 def __rmul__(self, n): # real signature unknown; restored from __doc__ 106 """ x.__rmul__(n) <==> n*x """ 107 pass 108 109 def __sizeof__(self): # real signature unknown; restored from __doc__ 110 """ T.__sizeof__() -- size of T in memory, in bytes """ 111 pass 112 113 tuple View Code

?

字典類型

1 1 class dict(object): 2 2 """ 3 3 dict() -> new empty dictionary 4 4 dict(mapping) -> new dictionary initialized from a mapping object's 5 5 (key, value) pairs 6 6 dict(iterable) -> new dictionary initialized as if via: 7 7 d = {} 8 8 for k, v in iterable: 9 9 d[k] = v 10 10 dict(**kwargs) -> new dictionary initialized with the name=value pairs 11 11 in the keyword argument list. For example: dict(one=1, two=2) 12 12 """ 13 13 14 14 def clear(self): # real signature unknown; restored from __doc__ 15 15 """ 清除內容 """ 16 16 """ D.clear() -> None. Remove all items from D. """ 17 17 pass 18 18 19 19 def copy(self): # real signature unknown; restored from __doc__ 20 20 """ 淺拷貝 """ 21 21 """ D.copy() -> a shallow copy of D """ 22 22 pass 23 23 24 24 @staticmethod # known case 25 25 def fromkeys(S, v=None): # real signature unknown; restored from __doc__ 26 26 """ 27 27 dict.fromkeys(S[,v]) -> New dict with keys from S and values equal to v. 28 28 v defaults to None. 29 29 """ 30 30 pass 31 31 32 32 def get(self, k, d=None): # real signature unknown; restored from __doc__ 33 33 """ 根據key獲取值，d是默認值 """ 34 34 """ D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None. """ 35 35 pass 36 36 37 37 def has_key(self, k): # real signature unknown; restored from __doc__ 38 38 """ 是否有key """ 39 39 """ D.has_key(k) -> True if D has a key k, else False """ 40 40 return False 41 41 42 42 def items(self): # real signature unknown; restored from __doc__ 43 43 """ 所有項的列表形式 """ 44 44 """ D.items() -> list of D's (key, value) pairs, as 2-tuples """ 45 45 return [] 46 46 47 47 def iteritems(self): # real signature unknown; restored from __doc__ 48 48 """ 項可迭代 """ 49 49 """ D.iteritems() -> an iterator over the (key, value) items of D """ 50 50 pass 51 51 52 52 def iterkeys(self): # real signature unknown; restored from __doc__ 53 53 """ key可迭代 """ 54 54 """ D.iterkeys() -> an iterator over the keys of D """ 55 55 pass 56 56 57 57 def itervalues(self): # real signature unknown; restored from __doc__ 58 58 """ value可迭代 """ 59 59 """ D.itervalues() -> an iterator over the values of D """ 60 60 pass 61 61 62 62 def keys(self): # real signature unknown; restored from __doc__ 63 63 """ 所有的key列表 """ 64 64 """ D.keys() -> list of D's keys """ 65 65 return [] 66 66 67 67 def pop(self, k, d=None): # real signature unknown; restored from __doc__ 68 68 """ 獲取并在字典中移除 """ 69 69 """ 70 70 D.pop(k[,d]) -> v, remove specified key and return the corresponding value. 71 71 If key is not found, d is returned if given, otherwise KeyError is raised 72 72 """ 73 73 pass 74 74 75 75 def popitem(self): # real signature unknown; restored from __doc__ 76 76 """ 獲取并在字典中移除 """ 77 77 """ 78 78 D.popitem() -> (k, v), remove and return some (key, value) pair as a 79 79 2-tuple; but raise KeyError if D is empty. 80 80 """ 81 81 pass 82 82 83 83 def setdefault(self, k, d=None): # real signature unknown; restored from __doc__ 84 84 """ 如果key不存在，則創建，如果存在，則返回已存在的值且不修改 """ 85 85 """ D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D """ 86 86 pass 87 87 88 88 def update(self, E=None, **F): # known special case of dict.update 89 89 """ 更新 90 90 {'name':'alex', 'age': 18000} 91 91 [('name','sbsbsb'),] 92 92 """ 93 93 """ 94 94 D.update([E, ]**F) -> None. Update D from dict/iterable E and F. 95 95 If E present and has a .keys() method, does: for k in E: D[k] = E[k] 96 96 If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v 97 97 In either case, this is followed by: for k in F: D[k] = F[k] 98 98 """ 99 99 pass 100 100 101 101 def values(self): # real signature unknown; restored from __doc__ 102 102 """ 所有的值 """ 103 103 """ D.values() -> list of D's values """ 104 104 return [] 105 105 106 106 def viewitems(self): # real signature unknown; restored from __doc__ 107 107 """ 所有項，只是將內容保存至view對象中 """ 108 108 """ D.viewitems() -> a set-like object providing a view on D's items """ 109 109 pass 110 110 111 111 def viewkeys(self): # real signature unknown; restored from __doc__ 112 112 """ D.viewkeys() -> a set-like object providing a view on D's keys """ 113 113 pass 114 114 115 115 def viewvalues(self): # real signature unknown; restored from __doc__ 116 116 """ D.viewvalues() -> an object providing a view on D's values """ 117 117 pass 118 118 119 119 def __cmp__(self, y): # real signature unknown; restored from __doc__ 120 120 """ x.__cmp__(y) <==> cmp(x,y) """ 121 121 pass 122 122 123 123 def __contains__(self, k): # real signature unknown; restored from __doc__ 124 124 """ D.__contains__(k) -> True if D has a key k, else False """ 125 125 return False 126 126 127 127 def __delitem__(self, y): # real signature unknown; restored from __doc__ 128 128 """ x.__delitem__(y) <==> del x[y] """ 129 129 pass 130 130 131 131 def __eq__(self, y): # real signature unknown; restored from __doc__ 132 132 """ x.__eq__(y) <==> x==y """ 133 133 pass 134 134 135 135 def __getattribute__(self, name): # real signature unknown; restored from __doc__ 136 136 """ x.__getattribute__('name') <==> x.name """ 137 137 pass 138 138 139 139 def __getitem__(self, y): # real signature unknown; restored from __doc__ 140 140 """ x.__getitem__(y) <==> x[y] """ 141 141 pass 142 142 143 143 def __ge__(self, y): # real signature unknown; restored from __doc__ 144 144 """ x.__ge__(y) <==> x>=y """ 145 145 pass 146 146 147 147 def __gt__(self, y): # real signature unknown; restored from __doc__ 148 148 """ x.__gt__(y) <==> x>y """ 149 149 pass 150 150 151 151 def __init__(self, seq=None, **kwargs): # known special case of dict.__init__ 152 152 """ 153 153 dict() -> new empty dictionary 154 154 dict(mapping) -> new dictionary initialized from a mapping object's 155 155 (key, value) pairs 156 156 dict(iterable) -> new dictionary initialized as if via: 157 157 d = {} 158 158 for k, v in iterable: 159 159 d[k] = v 160 160 dict(**kwargs) -> new dictionary initialized with the name=value pairs 161 161 in the keyword argument list. For example: dict(one=1, two=2) 162 162 # (copied from class doc) 163 163 """ 164 164 pass 165 165 166 166 def __iter__(self): # real signature unknown; restored from __doc__ 167 167 """ x.__iter__() <==> iter(x) """ 168 168 pass 169 169 170 170 def __len__(self): # real signature unknown; restored from __doc__ 171 171 """ x.__len__() <==> len(x) """ 172 172 pass 173 173 174 174 def __le__(self, y): # real signature unknown; restored from __doc__ 175 175 """ x.__le__(y) <==> x<=y """ 176 176 pass 177 177 178 178 def __lt__(self, y): # real signature unknown; restored from __doc__ 179 179 """ x.__lt__(y) <==> x<y """ 180 180 pass 181 181 182 182 @staticmethod # known case of __new__ 183 183 def __new__(S, *more): # real signature unknown; restored from __doc__ 184 184 """ T.__new__(S, ...) -> a new object with type S, a subtype of T """ 185 185 pass 186 186 187 187 def __ne__(self, y): # real signature unknown; restored from __doc__ 188 188 """ x.__ne__(y) <==> x!=y """ 189 189 pass 190 190 191 191 def __repr__(self): # real signature unknown; restored from __doc__ 192 192 """ x.__repr__() <==> repr(x) """ 193 193 pass 194 194 195 195 def __setitem__(self, i, y): # real signature unknown; restored from __doc__ 196 196 """ x.__setitem__(i, y) <==> x[i]=y """ 197 197 pass 198 198 199 199 def __sizeof__(self): # real signature unknown; restored from __doc__ 200 200 """ D.__sizeof__() -> size of D in memory, in bytes """ 201 201 pass 202 202 203 203 __hash__ = None 204 204 205 205 dict View Code

?

一、元素分類

有如下值集合 [11,22,33,44,55,66,77,88,99,90...]，將所有大于 66 的值保存至字典的第一個key中，將小于 66 的值保存至第二個key的值中。 即： {'k1': 大于66的所有值, 'k2': 小于66的所有值}

二、查找 查找列表中元素，移除每個元素的空格，并查找以 a或A開頭 并且以 c 結尾的所有元素。 li = ["alec", " aric", "Alex", "Tony", "rain"] tu = ("alec", " aric", "Alex", "Tony", "rain")? dic = {'k1': "alex", 'k2': ' aric', ?"k3": "Alex", "k4": "Tony"} 三、輸出商品列表，用戶輸入序號，顯示用戶選中的商品 商品 li = ["手機", "電腦", '鼠標墊', '游艇'] 四、購物車

功能要求：

• 要求用戶輸入總資產，例如：2000
• 顯示商品列表，讓用戶根據序號選擇商品，加入購物車
• 購買，如果商品總額大于總資產，提示賬戶余額不足，否則，購買成功。
• 附加：可充值、某商品移除購物車

?

轉載于:https://www.cnblogs.com/cp-miao/p/5497081.html

《新程序員》：云原生和全面數字化實踐50位技術專家共同創作，文字、視頻、音頻交互閱讀

總結

以上是生活随笔為你收集整理的python字符类型的一些方法的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。