df[df["description"].str.contains("used") & df["description"].str.contains("car")] 2 字符串长度筛选 可以使用apply函数,当有多列时,将会一列一列执行。 df[df["description"].apply(lambda x: len(x) > 15)] 使用字符串自带的属性: df[df["description"].str.len() > 15] ...
| x.__contains__(y) <==> y in x #判断x里字符是否在y里 | | __eq__(...) | x.__eq__(y) <==> x==y | | __format__(...) | S.__format__(format_spec) -> string | | Return a formatted version of S as described by format_spec. | | __ge__(...) | x.__...
>>help(str.title)Help on built-in function title:title(...) method of builtins.str instance S.title() -> str Return a titlecased version of S, i.e. words start with title case characters, all remaining cased characters have lower case.>>teststring='my name is niu dun'>>print("原...
Perform a string formatting operation. The format_string argument can contain literal text or replacement fields delimited by braces {}. Each replacement field contains either the numeric index of a positional argument, or the name of a keyword argument. Returns a copy of format_string where each...
For 8-bit strings, this method is locale-dependent. str.center(width[, fillchar]) Return centered in a string of length width. Padding is done using the specified fillchar (default is a space). Changed in version 2.4: Support for the fillchar argument. ...
Learn how to check if one Python string contains another using the contains () method. This case-sensitive instance method returns True or False based on …
python 之 string 因为用 python 主要还是集中在字符处理等上,所以有必要加深学习, 今天首先学习一下 string 的一些 方法,虽然也有 string 这个 module ,但是内置的 string.method 应该也挺丰富的,很多东西是重合的。并且由于 python 3.4 目前已经默认支持中文编码,而且很多新的特性,所以主要以 3x 为主学习, 目前...
The string whose method is called is inserted in between each given string. The result is returned as a new string. Example: '.'.join(['ab', 'pq', 'rs']) -> 'ab.pq.rs' 连接任意数量的字符串。 调用其方法的字符串被插入到每个给定字符串之间。
Indicates if the specified server configuration is a member of the list of available server configurations. The result is a Boolean--Trueif the specified server configuration object is equal to a member of the list of available server configuration objects,Falseotherwise. ...
string.lower() 返回小写的字符串。它将所有大写字符转换为小写。 str.upper() 将字符串中的小写字母转为大写字母。 代码语言:javascript 复制 txt="heLLo b2b2b2 and 3g3g3g"print(txt.title())print(txt.lower())print(txt.upper()) 代码语言:javascript ...