Python num to word

Converting a number to words is the process of translating a number to words and is an easy process. However, A few rules must be followed when converting a number to words, such as using the correct order and the correct spelling of numbers. 

Converting numbers into words has many benefits, such as :

In Python, this can be achieved using the following ways:

To convert numbers into words using the num2word library, we first have to import the num2word library. And after that, take a number as input from the user using the input() function.

import num2word
num = int(input("Enter a number: "))

Now, to convert the given number into words, use the word() function provided by the num2word module, and after that, print the final result.

word_number = num2word.word(num)
print(word_number)

Here is the complete code in action :

import num2word

num = int(input("Enter a number: "))
word_number = num2word.word(num)
print(word_number)

'''
#Output
Enter a number: 653
Six Hundred Fifty Three
'''

The inflect library is a library for singularizing and pluralizing English words. It can be used to convert a number to its ordinal form, as well as to convert a number to its word form.

To convert a number to its word form, we can use the number_to_words() method. This method takes an integer as an argument and returns a string. For example, the number_to_words() method will convert the number 100 to its word form, i.e., “one hundred”.

Here is the python code that uses the inflect library to convert a number to its word form.

import inflect

number = int(input("Enter the number : "))
p = inflect.engine()
word = p.number_to_words(number)

print(number,":",word)

'''
#Output
Enter the number : 777
777 : seven hundred and seventy-seven
'''

Till now, we have seen the readymade module that Python offers. Now, let’s write a function to translate a number into its corresponding English word representation. 

For that, We will first need to break the number down into its constituent parts. We can do this by using the modulo operator (%) to find the remainder and integer division (//) to remove the last digit from the number.

And finally, we will use a series of if-elif-else statements and add a special case for the number zero.

Here is the complete code in action :

def convert_to_words(num):
   if num == 0:
       return "zero"

   ones = ["", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
   tens = ["", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]
   teens = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]

   num_string = ""
   while num > 0:
       if num < 10:
           num_string += ones[num]
           num = 0
       elif num >= 10 and num <20:
           num_string += teens[num%10]
           num = 0
       elif num < 100:
           num_string += tens[num // 10]
           if num % 10 != 0:
               num_string += "-" + ones[num % 10]
               num = 0
       else: #num < 1000:
           num_string += ones[num // 100] + " hundred "
           num %= 100
   return num_string

num = int(input("Enter any number less than 1000 : "))

print(num," : ",convert_to_words(num))

'''
Enter any number less than 1000 : 54
54 : fifty-four
'''

Using a dictionary to get the English word representation of any given number is another approach; Here, we are declaring the python dictionary, which holds the value and keys.

And a convert_to_words() method takes one parameter i.e., number. And after that function does the main part of converting that number to its word form.

Here is the complete code in action.

#program to convert number into words in Python using a dictionary
number_words = {1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five', 6: 'six', 7: 'seven', 8: 'eight', 9: 'nine', 10: 'ten', 11: 'eleven', 12: 'twelve', 13: 'thirteen', 14: 'fourteen', 15: 'fifteen', 16: 'sixteen', 17: 'seventeen', 18: 'eighteen', 19: 'nineteen', 20: 'twenty', 30: 'thirty', 40: 'forty', 50: 'fifty', 60: 'sixty', 70: 'seventy', 80: 'eighty', 90: 'ninety', 100: 'hundred', 1000: 'thousand'}

def convert_to_words(number):
   if number == 0:
       return 'zero'
   if number < 0:
       return 'minus ' + convert_to_words(-number)
   if number < 21:
       return number_words[number]
   if number < 100:
       return number_words[number // 10 * 10] + ' ' + number_words[number % 10]
   if number < 1000:
       return number_words[number // 100] + ' ' + number_words[100] + ' ' + convert_to_words(number % 100)
   for i, k in enumerate(number_words):
       if number < 1000 ** (i + 1):
           return number_words[number // 1000 ** i] + ' ' + number_words[1000 ** i] + ' ' + convert_to_words(number % 1000 ** i)

number = int(input("Enter a number: "))
print(convert_to_words(number))

'''
#Output
Enter a number: 743
seven hundred forty three
'''