Python/strings/indian_phone_validator.py

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import re
def indian_phone_validator(phone: str) -> bool:
"""
Determine whether the string is a valid phone number or not
:param phone:
:return: Boolean
>>> indian_phone_validator("+91123456789")
False
>>> indian_phone_validator("+919876543210")
True
>>> indian_phone_validator("01234567896")
False
>>> indian_phone_validator("919876543218")
True
>>> indian_phone_validator("+91-1234567899")
False
"""
pat = re.compile(r"^(\+91[\-\s]?)?[0]?(91)?[789]\d{9}$")
match = re.search(pat, phone)
if match:
return match.string == phone
return False
if __name__ == "__main__":
print(indian_phone_validator("+918827897895"))