Phone numbers, Python Programming Phone numbers in the United States consist of

Question

Phone numbers, Python Programming

Phone numbers in the United States consist of 10 digits, sometimes formatted with punctuation and spaces. Write a program that prompts for a phone number and determines whether or not it is a valid 10-digit number by ignoring any punctuation. Do this by writing a function that takes the phone number string as a parameter and returns True if it is valid, False if not. (Hint: use a for loop to iterate over the string and increment a counter whenever you see a digit.)

Explanation / Answer

def main():

p_no=input(' enter the phone number xxx-xxx-xxxx : ')

validNumber(p_no)

translate number(p_no)

def validNumber(p_no):

if len(p_no) != 12:

return false

fir i in range(12):

if i in [3,7]:

if p_no[i] != '-':

return false

elif not p_no[i].isalnum():

return false

return true

def translateNumber(p_no):

s=" "

for char in p_no:

if char is '1':

x1 ='1'

s=s+x1

elif char is '-':

x2='-'

s=s+x2

elif char in 'ABCabc':

x3='2'

s=s+x3

elif char in 'DEFdef':

x4='3'

s=s+x4

elif char in'GHIghi':

x5='4'

s=s+x5

elif char in 'JKLjkl':

x6='5'

s=s+x6

elif char in 'MNOmno':

x7='6'

s=s+x7

elif char in 'PQRSpqrs':

x8='7'

s=s+x8

elif char in 'TUVtuv':

x9='8'

s=s+x9

elif char in 'WXYZwxyz':

x10='9'

s=s+x10

print (s)

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