determine whether the string is a valid phone number or not param phone return boolean indianphonevalidator91123456789 false indianphonevalidator919876543210 true indianphonevalidator01234567896 false indianphonevalidator919876543218 true indianphonevalidator911234567899 false indianphonevalidator919876543218 true 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 indian_phone_validator 91 9876543218 true
import re


def indian_phone_validator(phone: str) -> bool:
    
    pat = re.compile(r"^(\+91[\-\s]?)?[0]?(91)?[789]\d{9}$")
    if match := re.search(pat, phone):
        return match.string == phone
    return False


if __name__ == "__main__":
    print(indian_phone_validator("+918827897895"))