countLetters.py improvement

1ano/fp/aula07/countLetters.py

@@ -2,24 +2,31 @@ import sys
 
 
 def main():
-    # Read the file
-    f = open(sys.argv[1], 'r')
-    text = f.read()
-    f.close()
-
-    # Count the letters
-    letters = {}
-    for c in text:
-        if c.isalpha():
-            c = c.lower()
-            if c in letters:
-                letters[c] += 1
-            else:
-                letters[c] = 1
-
+    letters = countLetters(sys.argv[1])
+    
     # Print the results
     for c in sorted(letters.keys()):
         print(c, letters[c])
+    
+    # Print the most used letter and the number of times it's used
+    usedTheMostCount = max(letters.values())
+    usedTheMost = [letter for letter in letters.keys() if letters[letter] == usedTheMostCount][0]
+    print(f"A letra mais usada foi '{usedTheMost}', usada {usedTheMostCount} vezes.")
+
+
+def countLetters(filename):
+    # Read the file and count the letters
+    letters = {}
+    with open(filename, 'r') as f:
+        for c in f.read():
+            if c.isalpha():
+                c = c.lower()
+                if c not in letters:
+                    letters[c] = 0
+                letters[c] += 1
+    
+    # Returns the dictionary with the letters
+    return letters
 
 
 if __name__ == "__main__":