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Numerica - Practice Japanese numbers with the help of a computer!
#!/usr/bin/env python3
"""
This is a program to help you study the Japanese numbers.
It currently goes from 0 to 99; I will extend it at a later date.
It can be executed as follows:
./numerica.py
which will do all the available numbers, or
./numberica.py 10
which will go only up to 10.
"""
numbers = ['ZERO',
'いち',
'',
'さん',
'よん',
'',
'ろく',
'なな',
'はち',
'きゅう',
'じゅう',
]
class OutOfRangeException(Exception):
pass
def small_to_japanese(n):
"Convert a number (0-10) to Japanese."
if n > 10 or n < 0:
raise OutOfRangeException
return numbers[n]
def medium_to_japanese(n):
"Convert a number from 11 - 100 to Japanese"
if n > 100 or n < 11:
raise OutOfRangeException
digits = list(map(
int, str(n)
))
out = ""
# Omit いち in numbers > 10
if digits[0] > 1:
out += numbers[digits[0]] + " "
out += numbers[10] + " "
out += numbers[digits[1]]
return out
def number_to_japanese(n):
try:
return small_to_japanese(n)
except OutOfRangeException:
pass
try:
return medium_to_japanese(n)
except OutOfRangeException:
pass
print("No way to represent numbers of that magnitude!")
if __name__ == "__main__":
from random import randint
from sys import argv
# Check if there is a command line option for max numbers
if len(argv) >= 2:
try:
MAX_NUM = int(argv[1])
except ValueError:
MAX_NUM = -1
# A little edge case handling
if MAX_NUM > 99:
print("Impossible - this program doesn't "
"work with numbers over 99.")
exit(1)
else:
# If a max wasn't given, default to 99
MAX_NUM = 99
given = ""
done_so_far = []
number_done = 0
while True:
n = randint(0, MAX_NUM)
# If and as long as n has already been done, get a new number.
while n in done_so_far:
n = randint(0, MAX_NUM)
try:
given = input("What is {} in Roman numbers? ".format(
number_to_japanese(n)))
except KeyboardInterrupt:
print("Bye!")
exit(1)
except EOFError:
print("Bye!")
exit(1)
if given.lower() == 'quit':
print("Bye!")
exit(0)
if number_done >= MAX_NUM:
print("You did all the numbers in that set!")
exit(0)
try:
given_n = int(given)
except ValueError:
given_n = -1
if given_n == n:
print("You got it!")
done_so_far.append(n)
number_done += 1
else:
print("No, that's incorrect. This is {}.".format(n))
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