I have written code, to create variable and assign values using for loop.
nums = [0,1,2,3]
names = ["aa","bb","cc","dd"]
for num, name in zip(nums, names):
globals()["df"+str(num)]= names[num]
print(exec(f'df{num}'))
but I am getting result as None
#result: None None None None
but even I tried to change the code with below modification, still getting the same
nums = [0,1,2,3]
names = ["aa","bb","cc","dd"]
for num, name in zip(nums, names):
globals()["df"+str(num)]= name
print(exec(f'df{num}'))
Can some one help me to get the proper answer for this.
Note: even I used exec function in the place of name (ex: exec(f'{names[num]}’) then I am getting name error.
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Answer
Considering that exec returns None, I don’t see why you would expect otherwise.
Try changing a little bit your code to see it is working correctly, for example:
nums = [0,1,2,3]
names = ["aa","bb","cc","dd"]
for num, name in zip(nums, names):
globals()["df"+str(num)]= name
exec(f'print(df{num})')
Outputs:
aa bb cc dd
Update: If you want to return something, you must use eval:
nums = [0,1,2,3]
names = ["aa","bb","cc","dd"]
for num, name in zip(nums, names):
globals()["df"+str(num)]= name
print(eval(f'df{num}'))
Outputs:
aa bb cc dd