Finalized

Author: Niraj shrestha

projects/convert numbers to word/converter.py

@@ -0,0 +1,84 @@
+import math
+
+one_digit_words = {
+        '0': ["zero"],
+        '1': ["one"],
+        '2': ["two", "twen"],
+        '3': ["three", "thir"],
+        '4': ["four", "for"],
+        '5': ["five", "fif"],
+        '6': ["six"],
+        '7': ["seven"],
+        '8': ["eight"],
+        '9': ["nine"],
+    }
+
+two_digit_words = ["ten", "eleven", "twelve"]
+hundred = "hundred"
+large_sum_words = ["thousand", "million", "billion", "trillion", "quadrillion", "quintillion", "sextillion", "septillion", "octillion", "nonillion"]
+
+def converter(n):
+    word = []
+
+    if n.startswith('-'):
+        word.append("(negative)")
+        n = n[1:]
+    
+    if len(n) % 3 != 0 and len(n) > 3:
+        n = n.zfill(3 * (((len(n)-1) // 3) + 1))
+
+    sum_list = [n[i:i + 3] for i in range(0, len(n), 3)]
+    skip = False
+
+    for i, num in enumerate(sum_list):
+        if num != '000': skip = False
+        
+        for _ in range(len(num)):
+            num = num.lstrip('0')
+            if len(num) == 1:
+                if (len(sum_list) > 1 or (len(sum_list) == 1 and len(sum_list[0]) == 3)) and i == len(sum_list) - 1 and (word[-1] in large_sum_words or hundred in word[-1]):
+                    word.append("and")
+                word.append(one_digit_words[num][0])
+                num = num[1:]
+                break
+
+            if len(num) == 2:
+                if num[0] != '0':
+                    if (len(sum_list) > 1 or (len(sum_list) == 1 and len(sum_list[0]) == 3)) and i == len(sum_list) - 1:
+                        word.append("and")
+                    if num.startswith('1'):
+                        if int(num[1]) in range(3):
+                            word.append(two_digit_words[int(num[1])])
+                        else:
+                            number = one_digit_words[num[1]][1 if int(num[1]) in range(3, 6, 2) else 0] 
+                            word.append(number + ("teen" if not number[-1] == 't' else "een"))
+                    else:
+                        word.append(one_digit_words[num[0]][1 if int(num[0]) in range(2, 6) else 0] + ("ty " if num[0] != '8' else 'y ') + (one_digit_words[num[1]][0] if num[1] != '0' else ""))
+                    break
+                else:
+                    num = num[1:]
+                    continue
+                
+            if len(num) == 3:
+                if num[0] != '0':
+                    word.append(one_digit_words[num[0]][0] + " " + hundred)
+                    if num[1:] == '00': break
+                num = num[1:]
+ 
+        if len(sum_list[i:]) > 1 and not skip:
+            word.append(large_sum_words[len(sum_list[i:]) - 2])
+            skip = True
+    
+    word = " ".join(map(str.strip, word))
+    return word[0].lstrip().upper() + word[1:].rstrip().lower() if "negative" not in word else word[:11].lstrip() + word[11].upper() + word[12:].rstrip().lower()
+
+if __name__ == "__main__":
+    while True:
+        try:
+            n = input("Enter any number to convert it into words or 'exit' to stop: ")
+            if n == "exit":
+                break
+            int(n)
+            print(n, "-->", converter(n))
+        except ValueError as e:
+            print("Error: Invalid Number!")