How can I dynamically create a name of a variable in Python? [duplicate]

问题

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How do I create a variable number of variables? (13 answers)

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I am having a function in python

def func(dataFrame,country,sex):
    varible_name=dataFrame[(dataFrame['land']==country) & (dataFrame['sex']==sex)]

Now, for example, I call this function

func(dataFrame,'England','M')

I want that variable name be England_M instead of variable_name.

回答1:

You can't do that in Python. What you can do instead is store the results under a dictionary with key = England_M for instance.

In your case, you could do the following :

def func(dataFrame,country,sex):
    tmp = dataFrame[(dataFrame['land']==country) & (dataFrame['sex']==sex)]
    variable_name = "{c}_{s}".format(c=country, s=sex)
    return dict(variable_name=tmp)

Now using it :

results = func(dataFrame, "England", "M")
print(results['England_M'])

来源：https://stackoverflow.com/questions/48622683/how-can-i-dynamically-create-a-name-of-a-variable-in-python