# Validating phone number in Python HackerRank Solution

Hello coders, In this post, you will learn how to solve Validating phone number in Python HackerRank Solution. This problem is a part of the Python Hacker Rank series.

## Validating phone number in Python HackerRank Solution

### problem

Let’s dive into the interesting topic of regular expressions! You are given some input, and you are required to check whether they are valid mobile numbers.
A valid mobile number is a ten digit number starting with a 7, 8 or 9.
Concept :A valid mobile number is a ten digit number starting with a 7, 8 or 9.
Regular expressions are a key concept in any programming language. A quick explanation with Python examples is available here. You could also go through the link below to read more about regular expressions in Python.

#### Input Format :

The first line contains an integer N, the number of inputs.
N lines follow, each containing some string.

#### Constraints :

• 1 <= N <= 10
• 2 <= len(number) <= 15

#### Output Format :

For every string listed, print “YES” if it is a valid mobile number and “NO” if it is not on separate lines. Do not print the quotes.

```2
9587456281
1252478965
```

```YES
NO
```

### Validating phone number in Python HackerRank Solution

```import re
N = int(input())
for i in range(N):
number = input()
if(len(number)==10 and number.isdigit()):
output = re.findall(r"^\d{9}\$",number)
if(len(output)==1):
print("YES")
else:
print("NO")
else:
print("NO")```

Disclaimer: The above Problem (Validating phone number in Python) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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