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Python中实现字符串类型与字典类型相互转换的方法

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Release: 2016-06-16 08:42:46
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本文以实例形式简述了Python中字符串类型与字典类型相互转换的方法,是比较实用的功能。具体方法如下:

一、字典(dict)转为字符串(string)

我们可以比较容易的将字典(dict)类型转为字符串(string)类型。

通过遍历dict中的所有元素就可以实现字典到字符串的转换:

for key, value in sample_dic.items():
  print "\"%s\":\"%s\"" % (key, value)

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二、字符串(string)转为字典(dict)

如何将一个字符串(string)转为字典(dict)呢?

其实也很简单,只要用 eval()或exec() 函数就可以实现了。

>>> a = "{'a': 'hi', 'b': 'there'}"
>>> b = eval(a)
>>> b
{'a': 'hi', 'b': 'there'}
>>> exec ("c=" + a)
>>> c
{'a': 'hi', 'b': 'there'}
>>>

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感兴趣的朋友可以调试运行本实例,以加深对程序代码的理解。

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