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phone_number_generator.py
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import csv
def generate_phone_numbers(phone_number):
# If the phone number is complete (i.e. it has no 'x's), return it as a list
if "x" not in phone_number:
# Check if the NPA is "514" and the NXX is one of the excluded numbers
if phone_number[:3] == "514" and phone_number[3:6] in [
"211",
"311",
"411",
"511",
"555",
"611",
"711",
"811",
"911",
"950",
"263",
"438",
"450",
"460",
"514",
"537",
"579",
"958",
"959",
"468",
"584",
"753",
]:
return []
elif phone_number[:3] == "438" and phone_number[3:6] in [
"211",
"311",
"411",
"511",
"555",
"611",
"711",
"811",
"911",
"950",
"976",
"263",
"438",
"450",
"460",
"514",
"537",
"579",
"958",
"959",
"218",
"219",
"231",
"232",
"234",
"235",
"236",
"253",
"305",
"306",
"307",
"309",
"312",
"314",
"332",
"367",
"423",
"425",
"426",
"427",
"429",
"443",
"445",
"446",
"449",
"451",
"453",
"454",
"470",
"510",
"512",
"513",
"515",
"516",
"517",
"529",
"531",
"532",
"534",
"535",
"536",
"539",
"542",
"543",
"545",
"546",
"547",
"556",
"557",
"559",
"575",
"576",
"578",
"581",
"582",
"583",
"584",
"585",
"586",
"587",
"589",
"612",
"613",
"614",
"615",
"616",
"617",
"620",
"621",
"623",
"624",
"625",
"626",
"627",
"628",
"629",
"631",
"632",
"633",
"634",
"635",
"636",
"637",
"639",
"640",
"641",
"642",
"643",
"645",
"646",
"647",
"649",
"651",
"652",
"653",
"654",
"655",
"656",
"657",
"658",
]:
return []
else:
return [phone_number]
# Otherwise, generate all possible numbers for the first 'x' and recursively generate
# possible combinations of numbers for the rest of the phone number
phone_numbers = []
# Check if the fourth digit is an 'x'
if phone_number[3] == "x":
# Generate all possible numbers except for 0 and 1
for number in range(2, 10):
phone_numbers += generate_phone_numbers(
phone_number.replace("x", str(number), 1)
)
else:
# Generate all possible numbers
for number in range(10):
phone_numbers += generate_phone_numbers(
phone_number.replace("x", str(number), 1)
)
return phone_numbers
# Prompt the user for a partial phone number
phone_number = input(
"Enter a partial phone number with unknown digits represented by 'x': "
)
# Generate all possible phone numbers
phone_numbers = generate_phone_numbers(phone_number)
# Write the list of phone numbers to a CSV file
with open("phone_numbers.csv", "w", newline="") as csvfile:
writer = csv.writer(csvfile)
writer.writerows([[phone_number] for phone_number in phone_numbers])
print(f"Wrote {len(phone_numbers)} phone numbers to 'phone_numbers.csv'.")