下面是一个示例代码,演示了如何自定义函数,通过str.replace()函数实现忽略大小写的字符串替换: defreplace_ignore_case(string,old,new):pattern=re.compile(re.escape(old),re.IGNORECASE)returnpattern.sub(new,string)# 示例string="Hello world, hello Python, hello World"pattern="hello"replacement="hi"resul...
importredefreplace_value_ignore_case(text,old_value,new_value):returnre.sub(re.escape(old_value),new_value,text,flags=re.IGNORECASE)text="Python is a popular programming language."new_text=replace_value_ignore_case(text,"python",None)print(new_text) 1. 2. 3. 4. 5. 6. 7. 8. 上面的...
错误的默认值是'strict',意味着编码错误会引发错误UnicodeError。其他可能的值'ignore','replace','xmlcharrefreplace','backslashreplace'和其他任何名义通过挂号 codecs.register_error(),见错误处理程序。有关可能的编码列表,请参阅标准编码部分。 在3.1版中更改:添加了对关键字参数的支持。 str.endswith(后缀[,...
Decodes the string using the codec registered for encoding. encoding defaults to the default string encoding. errors may be given to set a different error handling scheme. The default is 'strict', meaning that encoding errors raise UnicodeError. Other possible values are 'ignore', 'replace' and...
IndexError: string index out of range 2.切片 说明:通过切片取出字符串的一段字符; 格式:str[起始位置:结束位置:步长] 参数:起始位置 ---> 表示从哪个下标开始 结束位置 ---> 表示到哪个下标结束 步长---> 默认从左到右,步长为1,也可以取反,表示倒叙,步长取负数 特点:顾头不顾尾,从start开始截取...
5.replace()replace(要替换的内容，替换后的内容，替换的次数) 使用指定内容对字符串中的某些内容进行...
The encoding in which to encode the string. errors The error handling scheme to use for encoding errors. The default is 'strict' meaning that encoding errors raise a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
Return a version of S suitableforcaseless comparisons. 返回一个适用于不分大小写对比的字符串,其实就是把大写字母都变成小写字母 S.center(width[, fillchar]) ->str width--字符串的总宽度。 fillchar--填充字符。 Return S centeredina string of length width. Paddingisdone using the specified fill ch...
aliasbrew="env PATH=(string replace (pyenv root)/shims ''\"\$PATH\") brew" Windows Pyenv does not officially support Windows and does not work in Windows outside the Windows Subsystem for Linux. Moreover, even there, the Pythons it installs are not native Windows versions but rather Linu...
replace('a string', 'another string') for s in ics) >>> # sed 's/pattern/replacement/g' -- needs regex >>> replaced = (re.sub(r'pattern', r'replacement', s) for s in ics)re.sub has a lot of additional features, including the ability to use a function instead of a string...