如何将字符串从python中的字典转换为变量名 [英] How to convert string into variable name from dictionary in python

问题描述

我有一本这样的字典

dictionary = {"1":"abc_123","2":"def_456" "3":"ghi_789"}

所以我想将 "abc_123" 转换为 abc_123 因为我有一个函数调用 abc_123，谁能帮我.

so I want to convert "abc_123" as a abc_123 because I have a function call abc_123, can anyone help me please.

推荐答案

TL;DR

# You have two functions.
>>> abc = lambda x: x**2
>>> xyz = lambda x: x**3
>>> type(abc), type(xyz)
(<class 'function'>, <class 'function'>)

# You have a key-value map of the names of the functions.
>>> d = {'1':'abc', '2':'xyz'}
>>> type(d['1'])
<class 'str'>

# Convert them into a key-value map of the index and the actual function.
>>> func_d = {k:eval(v) for k,v in d.items()}
>>> func_d[1]

另见:

• Python 的 eval() 有什么作用?
• 为什么使用eval"是一种不好的做法?
• https://nedbatchelder.com/blog/201206/eval_really_is_dangerous.html

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