Untitled

# Write your code here :-)
def isPhoneNumber(text):
    if len(text) != 12:
        return False
    for i in range (0,3):
        if not text[i].isdecimal():
            return False
    if text[3] != '-':
        return False
    for i in range (4,7):
        if not text[i].isdecimal():
            return False
    if text[7] != '-':
        return False
    for i in range (8,12):
        if not text[i].isdecimal():
            return False
    return True
    
print('Is 415-555-4242 a phone number?')
print(isPhoneNumber('415-555-4242'))
print('Is Moshi moshi a phone number?')
print(isPhoneNumber('Moshi moshi'))