python 如何去除字符串头尾的多余符号

a= '"This is test string"'    # strip()会默认去除'/n','/r','/t',' ',制表回车换行和空格等字符a.strip('"')>>> 'This is test string'b = ' This is another string '  #首尾两个空格b.strip(' ')>>>'This is another string'b.strip()>>>'This is another string'   # 默认去除c = '*This is an-another string/'  # 首尾两个字符c.strip('*/')  #这里strip将解析每一个字符，检查首尾是否存在，存在就去除返回>>>'This is an-another string'd = '//This is the last string**'d.strip('*/')>>> d = 'This is the last string'  # 持续去除首尾的指定字符符号e = 'einstance'e.strip('e')             # 去除首尾特定字符>>> 'instanc'

a = ' example 'a.rstrip()   #同样默认去除末尾的空格/n,/t,/r>>>' example'b = 'this is mya'b.rstrip('a') #去除末尾特定字符>>>'this is my'

a = ' example 'a.lstrip()   #默认去除开头的空格/n,/t,/r>>>'example 'b = 'athis is mya'b.lstrip('a') #去除末尾特定字符>>>'this is mya'

# 使用字符串replace()方法，将目标字符替换为空a = 'this is the test'a.replace('t','')>>>'his is he es'#第二种方法使用正则表达式方法import rere.sub('s','', a)>>>'thi i the tet'

a = ' "This is a good example" ' eval(a)>>>`This is a good example`b = '    "This is a good example" ' eval(b)>>>'This is a good example'