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@lhsfcboy
Created June 26, 2017 06:32
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Python中字符串相关的处理
a = 'Life is short, you need Python'
a.lower() # 'life is short, you need Python'
a.upper() # 'LIFE IS SHORT, YOU NEED PYTHON'
a.count('i') # 2
a.find('e') # 从左向右查找'e',3
a.rfind('need') # 从右向左查找'need',19
a.replace('you', 'I') # 'Life is short, I need Python'
tokens = a.split() # ['Life', 'is', 'short,', 'you', 'need', 'Python']
b = ' '.join(tokens) # 用指定分隔符按顺序把字符串列表组合成新字符串
c = a + '\n' # 加了换行符,注意+用法是字符串作为序列的用法
c.rstrip() # 右侧去除换行符
[x for x in a] # 遍历每个字符并生成由所有字符按顺序构成的列表
'Python' in a # True
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