chore: added comments

src/codewars/kata_chinese_numeral_encoder.py

@@ -30,11 +30,20 @@ D = {2: 10, 3: 100, 4: 1000, 5: 10000}
 
 
 def to_chinese_numeral(n):
+    # Check if n in C dictonary
     try:
         return C[n]
     except KeyError:
         pass
 
+    # Check if negative
+    if n < 0:
+        n = abs(n)
+        is_negative = True
+    else:
+        is_negative = False
+
+    # Put single digits in list
     split_number = [int(x) for x in str(n)]
 
     arranged_number = []
@@ -46,7 +55,10 @@ def to_chinese_numeral(n):
     if arranged_number[-1] == 0:
         arranged_number.pop(-1)
 
+    if is_negative:
+        arranged_number.append("-")
+
     return arranged_number
 
 
-print(to_chinese_numeral(120))
+print(to_chinese_numeral(-90909))  # 9 10000 9