1 # -*- coding: utf-8 -*- 2 """ 3  去除字符串两端的空格和字符 4  lstrip（）、rstrip（）、strip（） 5  返回字符串的拷贝 6 """ 7 x = ‘   aaa   ‘ 8  9 print ‘|‘,x.lstrip(),‘|‘,x.rstrip(),‘|‘,x.strip(),‘|‘10 # Output: | aaa    |    aaa | aaa |11 12 x = ‘xyxxyy hejyx yyx‘13 print ‘|‘+ x.strip(‘xy‘)+‘|‘14 # Output：| hejyx |15 16 x = ‘yxyxyxyxyxyx   yyxyxyxyx‘17 print x.lstrip(‘xy‘)18 # Output：   yyxyxyxyx19 20 print x.rstrip(‘xy‘)21 # Output: yxyxyxyxyxyx22 23 x = ‘xyyyyyxyxyxyxx‘24 print x.lstrip(‘xy‘)25 # Output：为空26 27 print x.rstrip(‘xy‘)28 # Output：为空