Python将字符串转换为变量名 [英] Python convert string to variable name

问题描述

我知道这可能是重复的，但到目前为止，我还没有找到（或应该被理解）对我所寻找的答案。

Im aware that this may come up as a duplicate but so far I haven't found (or should that be understood) an answer to what Im looking for.

我有一个字符串列表，并希望将每个字符串转换为一个变量名称，然后我分配一些东西。我明白，我可能需要一个dict，但我不熟悉他们，因为我比较新的python，所有的例子，我看到迄今为止处理价值观，而我正在尝试不同的东西。

I have a list of strings and want to convert each one into a variable name which I then assign something to. I understand that I may need a dict for this but I am unfamiliar with them as I am relatively new to python and all the examples I have seen so far deal with values whilst I'm trying something different.

我的东西如下：

list = ['spam', 'eggs', 'ham']

for i in range(len(list)):
    list[i] = rat.readColumn(ratDataset, list[i])

其中第一个列表[i]是变量名，而不是字符串。第二个列表[i]是一个字符串（并且上下文是从栅格属性表（大鼠）读取的列的名称）

where the first list[i] is a variable name and not a string. The second list[i] is a string (and for context is the name of a column Im reading from a raster attribute table (rat))

本质上我想要每个字符串在列表中设置为变量名称。

Essentially I want each string within the list to be set as a variable name.

这个想法是我可以创建一个循环，而不必为每个变量写出行，与匹配的鼠标列名称（字符串）。也许有一种比我建议的啤酒方法要好吗？

The idea behind this is that I can create a loop without having to write out the line for each variable I want, with matching rat column name (the string). Maybe there is a beer way of doing this than I am suggesting?

推荐答案

尝试以下操作：

lst = ['spam', 'eggs', 'ham']
d = {}   # empty dictionary
for name in lst:
    d[name] = rat.readColumn(ratDataset, name)

不要使用 list 作为标识符，因为它是一个类型标识符，你将掩盖它的存在。 for循环可以直接为内部的元素进行迭代，不需要构造索引并使用它来代替列表。 d ['spam'] 将是您的变量之一。

Do not use list for your identifiers as it is a type identifier and you would mask its existence. The for loop can iterate directly for the elements inside -- no need to construct index and use it aganist the list. The d['spam'] will be one of your variables.

尽管，也可以创建真实变量名称，如 spam ， eggs ， ham ，你不会这样做，因为效果将是无用的。

Although, it is also possible to create the real variable names like spam, eggs, ham, you would not probably do that as the effect would be useless.

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