string.count('x'): 这将返回字符串中'x'的出现次数 string.find('x'): 这将返回字符串中字符'x'的位置 string.lower(): 这将把字符串转换为小写 string.upper(): 这将把字符串转换为大写 string.replace('a', 'b'): 这将用b替换字符串中的所有a 此外,我们可以使用len()方法获取字符串中字符的数...
Return a list of the words in the string, using sep as the delimiter string. sep The delimiter according which to split the string. None (the default value) means split according to any whitespace, and discard empty strings from the result. maxsplit Maximum number of splits to do. -1 (...
Split the string at the first occurrence of sep, and return a 3-tuple containing the part before the separator, the separator itself, and the part after the separator. If the separator is not found, return a 3-tuple containing the string itself, followed by two empty strings. New in vers...
在导入一个包的时候,Python 会根据 sys.path 中的目录来寻找这个包中包含的子目录。 目录只有包含一个叫做 __init__.py 的文件才会被认作是一个包,主要是为了避免一些滥俗的名字(比如叫做 string)不小心的影响搜索路径中的有效模块。 最简单的情况,放一个空的 :file:__init__.py就可以了。当然这个文件中...
或者使用string的函数 str.split() 这个内置函数实现的是将str转化为list。其中str=""是分隔符。 >>> line = "Hello.I am qiwsir.Welcome you." >>> line.split(".") #以英文的句点为分隔符,得到list ['Hello', 'I am qiwsir', 'Welcome you', ''] ...
If maxsplit is given, at most maxsplit 355 splits are done. If sep is not specified or is None, any 356 whitespace string is a separator and empty strings are 357 removed from the result. 358 """ 359 return [] 360 361 def splitlines(self, keepends=None): # real signature unknown;...
If sep is not specified or is None, any whitespace string is a separator and empty strings are removed from the result. """ return [] 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. #!/usr/bin/python str = "Line1-abcdef \nLine2-abc \nLine4-abcd"; print str.split( ); print...
explicitly alignedto a set of labels, or the user can simply ignore the labels and let`Series`, `DataFrame`, etc. automatically align the data for you incomputations.- Powerful, flexible group by functionality to perform split-apply-combineoperations on data sets, for both aggregating and ...
dt.to_day_datetime_string() output Sun, Jan 23, 2022 3:16 PM 当然该模块还有其他很多强大的功能,具体的大家可以去看它的文档,最后我们要说的是其人性化时间的输出功能。如果我们平时用搜素引擎的话,就会看到有很多内容的时间被标成了“1天前”、“1周后”等等,这个在pendulum模块当中也能够轻而易举的实...
>>> string = " I $ love $ Python" >>> print(string.split()) ['I', '$', 'love', '$', 'Python'] >>> print(string.split('$')) [' I ', ' love ', ' Python']温馨提示: 在未指定sep参数时,也不能指定maxsplit参数,split()方法默认采用空字符进行分割,但当字符串中有连续的空格...