I want to check if that variable exists and print it if it does.
x = 10
def example():
z = 5
print("X (Global variable) : ",x)
print("Z (example() : ",z)
example()
print(z)
When i add print(z)
it will obviously raises an error because there is no variable called z.
Thanks for the answers guys. (specially Jasper, kevin and icantcode)
x = 10
def example():
z = 5
example()
try:
print(z)
except NameError:
print("There is no global variable called Z! ")
The built-in methods locals()
and globals()
return a dictionary of local/global variable names and their values.
if 'z' in locals():
print(z)
The most straight forward way would be to try to use it and if it fails do something else:
try:
something_with(z)
except NameError:
fallback_code()
you could also check dictionaries of locals()
and globals()
if 'z' in locals() or 'z' in globals():
print(z)
else:
fallback_code()
try:
print(z)
except NameError:
print("No variable named z!")
This code try's to print z and if there is no variable named z, it will run the code under except.
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