P2PU Exercises Chapter 7

"""
Created on Wed Mar 27 18:10:31 2013
Exercise 7.1 shout.py
@author: casa
"""
#f = open('mbox-short.txt', 'r')
fname = raw_input("Enter a file name: ")
try :
    f = open(fname)
except :
    print "The file %s doesn't exist or could not be opened." % fname
smalltext = f.readlines()
for line in smalltext :
    line = line.rstrip()
    print line.upper()
f.close()
exit()

"""
Created on Fri Mar 29 18:36:13 2013
Exercise 7.2 SPAM confidence
@author: casa
"""
#f = open('mbox-short.txt', 'r')
fname = raw_input("Enter a file name: ")
try :
    f = open(fname)
except :
    print "The file %s doesn't exist or could not be opened." % fname
l = list()
for line in f :
    if line.startswith('X-DSPAM-Confidence') :
        value = line[20:26]
        l.append(float(value))
print ("The average SPAM confidence is: "), sum(l)/len(l)
exit()


"""
Created on Fri Mar 29 18:36:13 2013
Exercise 7.3
@author: casa
"""
#f = open('mbox-short.txt', 'r')
fname = raw_input("Enter a file name: ")
if fname == "na na boo boo" :
        print "Do you think it's Eastern this weekend?"
        exit()
try :
    f = open(fname)
except :
    print "The file %s doesn't exist or could not be opened." % fname
count = 0
for line in f :
    if line.startswith("Subject") :
        count = count + 1
print ("There were %d subject lines in %s: ") % (count, fname)
exit()