下面是一个示例代码,展示了如何使用递归函数去除字符串开头的空格: defremove_leading_spaces(text):iftext[0]==" ":returnremove_leading_spaces(text[1:])else:returntext text=" Hello, World!"new_text=remove_leading_spaces(text)print(new_text) 1. 2. 3. 4. 5. 6. 7. 8. 9. 运行上述代码,...
使用strip()函数清除行首尾的空格。之后，通过判断cleaned_line是否为空来过滤掉空行。如果这行有内容，...
首先我们查看一下string模块中的strip源代码: #<python> # Strip leading and trailing tabs and spaces defstrip(s, chars=None): """strip(s [,chars]) -> string Return a copy of the string swith leading and trailing whitespace removed. If chars is given and not None,remove characters in char...
首先我们查看一下string模块中的strip源码:# # Strip leading and trailing tabs and spaces def strip(s, chars=None): """strip(s [,chars]) -> string Return a copy of the string swith leading and trailing whitespace removed. If chars is given and not None,remove characters in chars instead....
25、rstrip() string method to strip trailing whitespace from each line. (Strings also have an lstrip() method to strip leading whitespace, and a strip() method which strips both.) 26、zip()、tuple()、dict()、translate()、eval() characters = ('S', 'M', 'E', 'D', 'O', 'N',...
return s.strip(chars) # Strip leading tabs and spaces def lstrip(s, chars=None): """lstrip(s [,chars]) -> string Return a copy of the string s with leading whitespace removed. If chars is given and not None, remove characters in chars instead. ...
To remove all spaces: Usereplace(): my_string="Hello World"no_spaces=my_string.replace(" ","")# no_spaces is now "HelloWorld" Copy To remove leading and trailing spaces only: Usestrip(): my_string=" Hello World "trimmed=my_string.strip()# trimmed is now "Hello World" ...
s3=' hello'print s3.strip()#移除左側空格 s4=' hello'print s4.lstrip()#移除右边空格 s5='world 'print s5.rstrip()#字符串变小写 print str.lower()#分割字符串,分割后就是元组 s='wuya is python'print s.partition('is')#替换字符串
# Strip off trailing and leading blank lines: while trimmed and not trimmed[-1]: trimmed.pop() while trimmed and not trimmed[0]: trimmed.pop(0) # Return a single string: return '\n'.join(trimmed) 在这个示例中,文档字符串包含两个换行符,因此有 3 行长。第一行和最后一行是空行: ...
函数:strip() lstrip() rstrip() 作⽤:去除字符串中的空格或指定字符 ⼀、默认⽤法:去除空格str.strip() : 去除字符串两边的空格 str.lstrip() : 去除字符串左边的空格 str.rstrip() : 去除字符串右边的空格 注:此处的空格包含'\n', '\r', '\t', ' ' 默认⽤法实例 >>> dodo = " hello...