Add files via upload

Author: hasitharathnayake

Python_Data_Structures_assignments/Assignment_9.4.py

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+#program to read through the mbox-short.txt and figure out who has
+#sent the greatest number of mail messages.
+senders=dict()
+#file_name = input("Enter file name:")
+file_name="mbox-short.txt"
+handle = open(file_name)
+for lines in handle:
+    phrase_list=lines.split()
+    if 'From' in phrase_list:
+        key=phrase_list[1]
+        senders[key]=senders.get(key,0)+1
+v_max=0
+email_of_max=''
+for k,v in senders.items():
+    #print(k,v)#debug line
+    if v>=v_max:
+        v_max=v
+        email_of_max=k
+
+print(email_of_max,v_max)