Character counter give file as parameter

Character_Counter/Character_counter.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import sys
+
+cList = []
+nList = []
+
+
+def percentage(part, whole):
+    return 100 * part/whole
+
+def summation(nList):
+    summation = 0
+    for i in range(len(nList)):
+        summation = summation + nList[i]
+    return summation
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Plese give a file as a parameter.")
+        return
+    with open(sys.argv[1]) as f:
+        while True:
+            find = False
+            c = f.read(1)
+            c = c.lower()
+            if not c: break # Wut?
+            if c == '\n' or c == ' ': continue
+
+            for i in range(len(cList)):
+                if c == cList[i]:
+                    nList[i] = nList[i]+1
+                    find = True
+                    break
+
+            if find == False:
+                nList.append(1)
+                cList.append(c)
+
+    for i in range(len(cList)):
+        for j in range(len(cList)):
+            if cList[i] < cList[j]:
+                temp = cList[i]
+                cList[i] = cList[j]
+                cList[j] = temp
+
+                temp = nList[i]
+                nList[i] = nList[j]
+                nList[j] = temp
+
+    summ = summation(nList)
+
+    print("----------------------")
+    print ("Char    Freq    Percentage")
+    print("----------------------")
+    for i in range(len(cList)): 
+        per = percentage(nList[i], summ)
+        print("%s\t%d\t%1.1f " % (cList[i], nList[i], per))
+
+if __name__ == '__main__':
+    main()
+
+
+
+
+