hfile = open('test.txt')
print(hfile.read())

xfile = open('mbox.txt')
count = 0
for line in xfile :
    count = count + 1
print (count)

number = 0 
count = 0
xfile = open('mbox-short.txt')
for line in xfile :
    if line.startswith('X-DSPAM-Confidence') :
        position = line.find(':')
        number = number + float(line[position + 1 :])
        count = count + 1
print('Average Spam Confidence:',float(number)/float(count))

xfile = open('mbox-short.txt')
for line in xfile :
    line = line.rstrip()
    if not line.startswith('From:') :
        continue
    if not '@uct.ac.za' in line :
        continue
    print (line)
    

i = 0
friends = ['jose', 'steve', 'allan']

for friend in friends :
    print ("Hello:", friend.upper())

for i in range(len(friends)) :
    x = friends[i] 
    i = i + 1
    print ("Hello", friend)
    

stuff = list()

stuff.append('book')
stuff.append('99')

print(stuff)

stuff.append('cookie')

print(stuff)

if 'cookie' in stuff : print('monster')
    
stuff.sort()
print(stuff)

numlist = list()

while True :
    inp = input("Enter a number:")
    if inp == 'done' : break
    value = float(inp)
    numlist.append(value)

average = sum(numlist) / len(numlist)
print('Average', average)

words = 'His e-mail is [email protected]'

print (words)

pieces = words.split()

print (pieces)

parts = pieces[3].split('-')

print (parts)

n = parts [1]

print (n)

fname = input('Which File?')

fopen = open(fname)
wlist = list()
count = 0 
read = fopen.read().split()

for read[count] in read :
    if read[count] not in wlist :
        wlist.append(read[count])
    count = count + 1

wlist.sort()
    
print(wlist)

fname = input("Enter file name: ")
if len(fname) < 1:
    fname = "mbox-short.txt"

fh = open(fname)
count = 0

for line in fh :
    if line.startswith("From:") :
        sline = line.split(' ')
        print(sline[1].strip())
        count = count + 1

print("There were", count, "lines in the file with From as the first word")