Execute Statement in Python error Name Not Defined

Question

I am trying to use a Python list comprehension to get the Variable Name SW1 to equal the string "sw1" but I keep getting an error saying sw1 not defined

    VarList = ["SW1"]
    VarListEnd = ["sw1"]

    list3 = [exec("%s="%x + "%s"%y) for x in VarList for y in VarListEnd]
    list3

How do I amend the exec statement because that is where I think the error is? Really appreciate your help. Thanks in advance.

Please explain what you are trying to do here. Whatever it is, there's almost certainly a better way of doing it than `exec`. — Daniel Roseman, Sep 11 '18 at 09:38
I am trying to create a variable called SW1 and assign it a string value "sw1" — cordelia, Sep 11 '18 at 09:38
You can better use a dictionary and use it as a Key value pair assign the value of key what you want. — ParthS007, Sep 11 '18 at 09:40
Can I do it in a list comprehension though because I am really trying to use list comprehensions for this? Thank you for your suggestion and will try it. — cordelia, Sep 11 '18 at 09:43

score 0 · Answer 1 · answered Sep 11 '18 at 09:39

0

You don't need exec for that. To create variables, you can do

for name, value in zip(VarList, VarListEnd):
    locals()[name] = value

answered Sep 11 '18 at 09:39

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Execute Statement in Python error Name Not Defined

1 Answers1