1.
Introduction
2.
Reason for NZEC Error
2.1.
Infinite recursion
2.2.
Wrong Way of Input/Output
2.3.
Dividing by 0
2.4.
Accessing Wrong Index
3.
Ways to Resolve NZEC Error
3.1.
Resolving Infinite Recursion
3.2.
Correct Way of Input/Output
3.3.
Some Other Ways
4.
5.
Conclusion
Last Updated: Mar 27, 2024

# NZEC Error in Python

ANKIT KUMAR
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## Introduction

As a programmer, you must have come across the NZEC error at least once. Most of you might have seen it in online coding platforms.

Exit codes are numbers returned by running programs to the operating system upon successful termination of the program. If the program terminated successfully without any error, exit code 0 is returned.

However, in case of any other situation where there was a problem in the successful termination of the program, a Non Zero Exit Code is returned. This is known as the NZEC Error.

In this article, we shall discuss the Non Zero Exit Code, the reason for NZEC, and the ways we can resolve it.

## Reason for NZEC Error

There can be various reasons for NZEC errors. We shall now see most of them one by one with code examples.

### Infinite recursion

Because of infinite recursion, we will run out of stack memory, and the program will throw an error.

Example:

``````i=1
# recursive function to print Coding Ninjas
def recursiveFunc():
print("Coding Ninjas")
if i>0:
recursiveFunc()

# calling the recursiveFunc
recursiveFunc()``````

Output:

Also see, Merge Sort Python and Convert String to List Python.

### Wrong Way of Input/Output

This is one of the biggest reasons for NZEC to occur. In most coding platforms, you are required to input N space-separated integers. Failing to do so in an appropriate manner will result in NZEC error.

Example:

``````We have to input three space-separated integers 1 2 3.

# we need to input three space-separated integers
# 1 2 3

# incorrect way
firstNum = int(input())
secondNum = int(input())
thirdNum = int(input())

print( firstNum)
print( secondNum)
print( thirdNum)``````

Output:

### Dividing by 0

Dividing any number by zero will result in NZEC error

Example:

``````# dividing by zero

x= 5/0
print(x)``````

Output:

You can try it on online python compiler.

### Accessing Wrong Index

Example:

``````# Accessing the Wrong Index

my_list=["Coding", "Ninjas", "Blogs"]

# prints Coding
# print(my_list[0])

# prints Ninjas
# print(my_list[1])

# accessing index 5, which is more than the size of my_list
print(my_list[5])``````

Output:

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## Ways to Resolve NZEC Error

### Resolving Infinite Recursion

Recursion should have appropriate terminating conditions such that the program is able to terminate after a finite time.

Example:

``````# recursive function to print Coding Ninjas only five times
def recursiveFunc(i):
if i<6:
print("Coding Ninjas")
recursiveFunc(i+1)

# calling the recursiveFunc
i=1
recursiveFunc(i)``````

Output:

``````Coding Ninjas
Coding Ninjas
Coding Ninjas
Coding Ninjas
Coding Ninjas``````

Explanation:

We have provided a legal terminating condition, i.e., i<6. This means that once the value of i becomes 6 or greater than 6, the program will terminate successfully.

### Correct Way of Input/Output

Here are some of the examples that show how to take N space-separated integers as input.

Example 1:

``````# to input N separated integers
arr= [int(x) for x in input().split()]

# printing the contents of arr
print(*arr)``````

Output:

Example 2:

``````# using list to convert the map to a list
arr= list(map(int, input().split()))

# printing arr
print(*arr)``````

Output:

### Some Other Ways

Some other ways to resolve the NZEC Error are:

• Ensure that an illegal arithmetic operation like dividing by zero is not performed.
• Using try-except blocks can help resolve NZEC errors most of the time.
• Test your code and always check for corner cases.

1.What is the NZEC Error in Python?

NZEC stands for Non Zero Exit Code. It is a number that is returned by the program to the operating system when it is not able to terminate successfully.

2. What are some of the common reasons for NZEC error?

Some common reasons are incorrect input/output, accessing illegal indexes in an array or list, division by zero, etc.

3. What is the correct way to take N space-separated integers as input?

We should use input(), map(), and split() functions to take space-separated integers and list to convert the map to a list.

list(map(int, input().split()))

4. Is NZEC compile-time error or runtime error?

It is a runtime error.

## Conclusion

In this article, we have extensively discussed NZEC Error in Python along with the code examples in Python.

• Exit codes are numbers returned by running programs to the operating system upon successful termination of the program. If the program terminated successfully without any error, exit code 0 is returned.
• NZEC stands for Non Zero Exit Code. It is a number that is returned by the program to the operating system when it is not able to terminate successfully.

We hope that this blog has helped you enhance your knowledge regarding NZEC Error in Python and if you would like to learn more, check out our articles here

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