i solve this problem by this way, do u have another idea?

Question

You are given a number input, and need to check if it is a valid phone number.
A valid phone number has exactly 8 digits and starts with 1, 8 or 9.
Output "Valid" if the number is valid and "Invalid", if it is not.

Sample Input
81239870

Sample Output
Valid
https://code.sololearn.com/ccSN3655lODv/?ref=app

Answer 1

the task can also be done without using regex:

inp = input()
if len(inp) == 8 and inp.isdigit() and inp[0] in "189":
print("Valid")
else:
print("Invalid")

Answer 2

TheWh¡teCat 🇧🇬 it said give me a number input, if saif give me a input my programme be different

Answer 3

Lothar thank you, 🍻

Answer 4

karimireza77 , your pattern is not good, it only checks the beginning of the number. If you test it with "1qqqqqqq" it will print "Valid", which obviously is not true.