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Task3.py
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Task3.py
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"""
Read file into texts and calls.
It's ok if you don't understand how to read files.
"""
import csv
with open('texts.csv', 'r') as f:
reader = csv.reader(f)
texts = list(reader)
with open('calls.csv', 'r') as f:
reader = csv.reader(f)
calls = list(reader)
"""
TASK 3:
(080) is the area code for fixed line telephones in Bangalore.
Fixed line numbers include parentheses, so Bangalore numbers
have the form (080)xxxxxxx.)
Part A: Find all of the area codes and mobile prefixes called by people
in Bangalore.
- Fixed lines start with an area code enclosed in brackets. The area
codes vary in length but always begin with 0.
- Mobile numbers have no parentheses, but have a space in the middle
of the number to help readability. The prefix of a mobile number
is its first four digits, and they always start with 7, 8 or 9.
- Telemarketers' numbers have no parentheses or space, but they start
with the area code 140.
Print the answer as part of a message:
"The numbers called by people in Bangalore have codes:"
<list of codes>
The list of codes should be print out one per line in lexicographic order with no duplicates.
Part B: What percentage of calls from fixed lines in Bangalore are made
to fixed lines also in Bangalore? In other words, of all the calls made
from a number starting with "(080)", what percentage of these calls
were made to a number also starting with "(080)"?
Print the answer as a part of a message::
"<percentage> percent of calls from fixed lines in Bangalore are calls
to other fixed lines in Bangalore."
The percentage should have 2 decimal digits
"""
def get_phone_type(phone):
if phone.startswith('(080)'):
return 'bangalore'
elif phone.startswith('140'):
return 'telemarketer'
elif phone.startswith('(0'):
return 'fixed_lines'
else:
return 'mobile_number'
def bangalore_receiver_codes(calls):
receiver_list = []
codes = []
for call in calls:
caller, receiver = call[0], call[1]
caller_type = get_phone_type(caller)
if caller_type == 'bangalore':
receiver_list.append(receiver)
for phone in receiver_list:
if get_phone_type(phone) == 'bangalore':
codes.append(phone[1:4])
elif get_phone_type(phone) == 'telemarketer':
codes.append(phone[:3])
elif get_phone_type(phone) == 'fixed_lines':
codes.append(phone.split('(', 1)[1].split(')')[0])
else:
codes.append(phone[:4]) # mobile: first 4 digits
print("The numbers called by people in Bangalore have codes:\n")
print('\n'.join(sorted(set(codes))))
bangalore_receiver_codes(calls)
def fixed_percent(calls):
from_fixed = 0
from_fixed_to_fixed = 0
for call in calls:
caller, receiver = call[0], call[1]
caller_type = get_phone_type(caller)
receiver_type = get_phone_type(receiver)
if caller_type == 'bangalore':
from_fixed += 1 # counter
if caller_type == 'bangalore' and receiver_type == 'bangalore':
from_fixed_to_fixed += 1 # counter
answer = from_fixed_to_fixed / from_fixed * 100
percent = round(answer, 2)
print(percent, "percent of calls from fixed lines in Bangalore are calls to other fixed lines in Bangalore.\n")
fixed_percent(calls)