# code of foo.py
var = 7
#code of foo1.py
import foo
print(foo.var) # it prints 7
foo.var = 9
print(foo.var) # it prints 9
#from "foo" reload(var)
import foo #reimporting module
print(foo.var) # still it prints 9 instead of 7 why?
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jonrsharpe
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Sumant W W
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1Modules in python are always imported only once. – Mechanic Pig Sep 15 '22 at 09:37
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you cannot do like that, afaik, you need to run the python file again. – Henro Sutrisno Tanjung Sep 15 '22 at 09:40
2 Answers
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The reason is that second import foo doesn't effect. See this question: What happens when a module is imported twice?.
hide1nbush
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Since the linked question doesn't have it, the python docs on this can be found here: [The Module Cache](https://docs.python.org/3/reference/import.html#the-module-cache) – SitiSchu Sep 15 '22 at 09:40
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In python modules are singleton, meaning every import statement return the same instance of a module. As a consequence, any mutation of a module is visible to every scope that import this module.
https://docs.python.org/3/tutorial/modules.html#more-on-modules
WIP
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