CODEWITHSUNDEEP
pythonexceptionpython-phonenumber
Bogdan Mind
Bogdan Mind

Reputation: 75

How to manage and skip exceptions properly? And phonenumbers lib to cover)

I use https://github.com/daviddrysdale/python-phonenumbers in my project to fix all bad numbers.

import csv
import phonenumbers

with open('base.csv') as f:
    data = list(csv.reader(f, delimiter=';'))

header_row = data[0]
header_row[8] = "Fixed Home Phone"
header_row[13] = "Fixed Mobile Phone"


for row in data[1:6]:  # we go from first because there is header row
    try:
        print(f'Original row - {row[7]}')
        x = phonenumbers.parse(row[7], "RU") #LOOK HERE! sometimes exception, due to blank field
        print(x)
        num2 = phonenumbers.parse(row[12], "RU")
        print(f'Phone Num Script Response - {num2}')  # sometimes exception is here
        print("To national format - ", phonenumbers.format_number(x, phonenumbers.PhoneNumberFormat.E164))
        row[8] = phonenumbers.format_number(x, phonenumbers.PhoneNumberFormat.E164)
        row[13] = phonenumbers.format_number(y, phonenumbers.PhoneNumberFormat.E164)
    except:
          continue
        

writer = csv.writer(open("base_new.csv", 'w'))
for row in data:
    writer.writerow(row)

Some rows in comment "#LOOK HERE!" -in code are empty in my file. So this library phone numbers throws an exception. And i am struggling with fixing it.

Here is the example of exception from their page

>>> z = phonenumbers.parse("02081234567", None)  # no region, no + => unparseable
Traceback (most recent call last):
  File "phonenumbers/phonenumberutil.py", line 2350, in parse
    "Missing or invalid default region.")
phonenumbers.phonenumberutil.NumberParseException: (0) Missing or invalid default region.
>>> z = phonenumbers.parse("gibberish", None)
Traceback (most recent call last):
  File "phonenumbers/phonenumberutil.py", line 2344, in parse
    "The string supplied did not seem to be a phone number.")
phonenumbers.phonenumberutil.NumberParseException: (1) The string supplied did not seem to be a phone number.

So(because i wanted program to still work through wrong numbers, i made TRY/Except and added continue. But it turned our that either variable x gives exception and num2 is skipped, or vice versa) It is such a struggle for me.

Please advise, how can handle exceptions properly and what to add, so my script could Fix both x AND num2 in EVERY row?

Upvotes: -1

Views: 717

Answers (1)

MSalters
MSalters

Reputation: 180225

Your exception handlers should be just around the x = phonenumbers.parse and num= = phonenumbers.parse. When an exception is caught, simply set x or num to your desired alternative value.

Upvotes: 0

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