99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
# int_to_text.py
|
|
# --------------
|
|
# Functions to print out a verbal representation of an integer.
|
|
|
|
MAXIMUM = 1000000
|
|
|
|
def int_under_1000000_to_text(number):
|
|
"Returns a textual representation of the number."
|
|
check_number_in_range(abs(number), 1 , MAXIMUM)
|
|
if number < 1000:
|
|
return int_under_1000_to_text(number)
|
|
else:
|
|
thousands, hundreds = divide_with_remainder(number, 1000)
|
|
thousands_text = int_under_1000_to_text(thousands)
|
|
hundreds_text = int_under_1000_to_text(hundreds)
|
|
return thousands_text + " thousand " + hundreds_text
|
|
|
|
def int_under_1000_to_text(number):
|
|
"Returns a textual representation of the number"
|
|
check_number_in_range(number, 1, 1000)
|
|
if number < 100:
|
|
return int_under_100_to_text(number)
|
|
else:
|
|
hundreds, tens = divide_with_remainder(number, 100)
|
|
hundreds_text = int_under_10_to_text(hundreds)
|
|
tens_text = int_under_100_to_text(tens)
|
|
return hundreds_text + " hundred and " + tens_text
|
|
|
|
def int_under_100_to_text(number):
|
|
check_number_in_range(number, 1, 100)
|
|
if number < 10:
|
|
return int_under_10_to_text(number)
|
|
else:
|
|
tens, ones = divide_with_remainder(number, 10)
|
|
if tens == 9:
|
|
return "ninety-" + int_under_10_to_text(ones)
|
|
elif tens == 8:
|
|
return "eighty-" + int_under_10_to_text(ones)
|
|
elif tens == 7:
|
|
return "seventy-" + int_under_10_to_text(ones)
|
|
elif tens == 6:
|
|
return "sixty-" + int_under_10_to_text(ones)
|
|
elif tens == 5:
|
|
return "fifty-" + int_under_10_to_text(ones)
|
|
elif tens == 4:
|
|
return "forty-" + int_under_10_to_text(ones)
|
|
elif tens == 3:
|
|
return "thirty-" + int_under_10_to_text(ones)
|
|
elif tens == 2:
|
|
return "twenty-" + int_under_10_to_text(ones)
|
|
elif number >= 16:
|
|
return int_under_10_to_text(ones) + "teen"
|
|
elif number == 15:
|
|
return "fifteen"
|
|
elif number == 14:
|
|
return "fourteen"
|
|
elif number == 13:
|
|
return "thirteen"
|
|
elif number == 12:
|
|
return "twelve"
|
|
elif number == 11:
|
|
return "eleven"
|
|
|
|
def int_under_10_to_text(number):
|
|
check_number_in_range(number, 1, 10)
|
|
if number == 1:
|
|
return "one"
|
|
elif number == 2:
|
|
return "two"
|
|
elif number == 3:
|
|
return "three"
|
|
elif number == 4:
|
|
return "four"
|
|
elif number == 5:
|
|
return "five"
|
|
elif number == 6:
|
|
return "six"
|
|
elif number == 7:
|
|
return "seven"
|
|
elif number == 8:
|
|
return "eight"
|
|
elif number == 9:
|
|
return "nine"
|
|
|
|
def check_number_in_range(number, minimum, maximum):
|
|
if number < minimum:
|
|
raise ValueError(f"{number} must not be below {minimum}.")
|
|
if number >= maximum:
|
|
raise ValueError(f"{number} must be less than {maximum}.")
|
|
|
|
def divide_with_remainder(dividend, divisor):
|
|
"""Divides one number by another, using whole-number division.
|
|
Returns the quotient and the remainder.
|
|
Note how a function can return more than one value!
|
|
"""
|
|
quotient = dividend // divisor
|
|
remainder = dividend % divisor
|
|
return quotient, remainder
|