This error is very similar to 'str' object is not callable. One common error in Python is the TypeError int not callable, which means: “You are trying to use a number as if it were a function.”
A “callable” is anything you can put parentheses () after, like print() or my_function(). An integer, like 10, is just data.
Cause 1: Using Parentheses Instead of Brackets
This is a simple syntax mistake. You meant to get an item from a list (using []), but you used parentheses () by accident.
Problem Code:
my_list = [10, 20, 30] print(my_list(0)) # CRASH! # You're trying to CALL the list.
The Fix: Use square brackets [] for indexing.
print(my_list[0]) # Correct! Output: 10
Cause 2: Overwriting a Function Name
This is the most common cause. You accidentally used a function name as a variable.
Problem Code:
# 'sum' is a built-in function that adds a list my_list = [1, 2, 3] # 1. You calculate the sum and store it in a variable... # ... but you accidentally named it 'sum'! sum = sum(my_list) # sum is now the number 6 # 2. You try to use the 'sum' function again other_list = [4, 5, 6] new_sum = sum(other_list) # CRASH! TypeError: 'int' object (the number 6) is not callable
The Fix: NEVER use built-in function names as variable names.
my_list = [1, 2, 3] total = sum(my_list) # Use a good variable name like 'total' other_list = [4, 5, 6] new_total = sum(other_list) # The 'sum' function is safe and sound. print(new_total)
