Python2.x版本中maketrans()方法的使用介绍

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Release: 2016-06-06 11:16:53
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 maketrans()方法返回的字符串intab每个字符映射到字符的字符串outtab相同位置的转换表。然后这个表被传递到translate()函数。

注意:两个intab和outtab必须具有相同的长度。
语法

以下是maketrans()方法的语法:

str.maketrans(intab, outtab]);

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参数

  • intab -- 这是实际字符的字符串。
  • outtab -- 这是相应的映射的字符的字符串。

返回值

此方法返回时使用转换表translate()函数。
例子

下面的例子显示maketrans()方法的使用。在此,在一个字符串中每一个元音替换它的元音的位置:

#!/usr/bin/python

from string import maketrans  # Required to call maketrans function.

intab = "aeiou"
outtab = "12345"
trantab = maketrans(intab, outtab)

str = "this is string example....wow!!!";
print str.translate(trantab);

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当我们运行上面的程序,它会产生以下结果:

th3s 3s str3ng 2x1mpl2....w4w!!!

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