Throw NameError: name 'person' is not defined in Python 3.x
Dung Do Tien
Oct 01 2021
114
Hello you guys, I am a newbie in Python and I'm also studying more about Python.
I have some lines of code, I want to learn more about function and how to call a function in Python. Function as below:
long = int(input("Enter first number:"))
short = int(input("Enter second number:"))
person()
def person():
if short == 0 and long > 0:
print("You are long")
elif short == 1 and long > 0:
print("You are normal")
elif long < 1:
print("You not long")
long =- 1
But I get an exception NameError: name 'person' is not defined when I run code above.
Enter first number:9
Enter second number:0
Traceback (most recent call last):
File "main.py", line 4, in <module>
person()
NameError: name 'person' is not defined
And I am using python 3.8.2
Anyone can explain it to me? How can I solve it?
Thanks for any suggestions.
Have 1 answer(s) found.
-
W0
Waleed Ali Oct 01 2021
You need to declare/create function before you calling it.
long = int(input("Enter first number:")) short = int(input("Enter second number:")) #Step 1: Define function def person(): if short == 0 and long > 0: print("You are long") elif short == 1 and long > 0: print("You are normal") elif long < 1: print("You not long") long =- 1 #Step 2: Call function (You need to call after defined it.) person()Note: Python not same with Javascript. Javascript allow using before define but Python is not.
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