9.4 Write a program to read through the mbox-short.txt and figure out who has the sent the greatest number of mail messages. The program looks for 'From ' lines and takes the second word of those lines as the person who sent the mail. The program creates a Python dictionary that maps the sender's mail address to a count of the number of times th…

py4e_ex_09_04

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

lst = list()

for line in hand:
    if not line.startswith("From:"): continue
    line = line.split()
    lst.append(line[1])

counts = dict()
for word in lst:
    counts[word] = counts.get(word,0) + 1

bigcount = None
bigword = None
for word,count in counts.items(): 
    if bigcount is None or count > bigcount:
        bigcount = count
        bigword = word

print (bigword,bigcount)

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
handle = open(name)
counts = dict()
for line in handle:
if line.startswith('From: '):
email = line[5:]
counts[email] = counts.get(email, 0) + 1
bigcount = None
bigemail = None
for email,count in counts.items():
if bigcount is None or count > bigcount:
bigcount = count
bigemail = email
print(bigemail,bigcount)

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

lst = list()
dic = dict()

for line in handle:
line = line.rstrip()
if not line.startswith("From: "): continue
words = line.split()
mail = words[1]
dic[mail] = dic.get(mail,0)+1

maxCount = max(dic.values())

for mail,count in dic.items():
if count == maxCount:
print(mail,count)

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
mydic=dict()
handle = open(name)
count=0
for line in handle:
lines=line.rstrip()
if lines.startswith('From:'):
continue
if lines.startswith('From'):
list=lines.split()
#print(list[1])
mydic[list[1]]=mydic.get(list[1],0)+1

#print(mydic)

maxval=max(mydic, key=mydic.get)
print(maxval,mydic[maxval])

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
handle = open(name)
dic = dict()
for line in handle:
wordsplit = line.split()
if 'From' in wordsplit:
email = wordsplit[1]
dic[email] = dic.get(email, 0) + 1
holder = 0
keyresult = None
valueresult = None
for key, value in dic.items():
if value > holder:
holder = value
keyresult = key
valueresult = value
print(keyresult, valueresult)

name = input("Enter file:")
handle = open(name)
a=None
big=dict()
for line in handle:
if line.startswith("From"):
line=line.split()
a=line[1:2]
for word in a:
big[word]= big.get(word,0)+1
bigcount=None
bigword=None
for word,big in big.items():
if bigcount is None or big > bigcount:
bigword=word
bigcount=big
print(bigword,bigcount)

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
handle = open(name)
counts= dict()
for line in handle:
if not line.startswith('From '):
continue
words= line.split()
email = words[1]
counts[email]=counts.get(email,0)+1
bigcount= None
bigword= None
for theword,count in counts.items():
if bigcount is None or count> bigcount:
bigword= theword
bigcount= count
print(bigword,bigcount)

name = "mbox-short.txt"
if len(name) < 1:
    name = "mbox-short.txt"
handle = open(name)

lst = list()
mail_names = list()
counts = dict()
qew= ""

for line in handle:
    lst = line.rstrip().split()
    if 'From' in lst:
        mail_names.append(lst[1])


for name in mail_names:
    counts[name] = counts.get(name, 0) + 1

max_name_as_list = [key for key, value in counts.items() if value == max(counts.values())]
max_name = qew.join(max_name_as_list)

print(max_name ,max(counts.values()))

fgh = input("Enter file:")
fh = open(fgh)
names = dict()
namelist = list()
for line in fh :
if not line.startswith("From ") : continue
name = line.split()
namelist.append(name[1])
for sendername in namelist :
names[sendername] = names.get(sendername,0) + 1
bigname = None
bigcount = None
for onename, onecount in names.items() :
if bigcount is None or onecount > bigcount:
bigcount = onecount
bigname = onename
print(bigname,bigcount)

file = input("Enter a file name : ")
fhand = open(file)
email = dict()

for line in fhand:
words = line.split()
if len(words) > 3 and words[0] == "From" :
email[words[1]] = email.get(words[1],0) + 1
else : continue

lst = list(email.values())
a =max(lst)

for i in email:
if email[i] == a:
print(i, email[i])

Mine

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

handle = open(name,'r')
counts=dict()

for line in handle:
if not line.startswith('From '): continue
words=line.split()
words=words[1]
counts[words]=counts.get(words,0)+1

bigword = None
bigcount = None

for word, count in counts.items():
if bigcount is None or count > bigcount:
bigword = word
bigcount = count
print(bigword, bigcount)

fname = input("Enter file name: ")
fh = open(fname)
counts = dict()
for line in fh:
if not line.startswith('From '):
continue #to skip the rest
else:
line = line.strip().split() #turns the line to a list
address = line[1] #get the senders email address

#creates a dictionary and gets how often a particular senders email appears
counts[address] = counts.get(address,0) + 1

bigword = None
bigcount = None
for word,count in counts.items():
if bigcount is None or count > bigcount:
bigword = word
bigcount = count

print(bigword,bigcount)

fname = input("Enter file name")
fh = open(fname)
counts = dict()
lst = []
for line in fh:
    if not line.startswith("From "):
        continue
    line = line.rstrip().split()
    emails = line[1]
    lst.append(emails)
for email in lst:
    counts[email] = counts.get(email, 0) +1
print(emails, counts[email])

hello bro. why output counts[email] are the largest.

.

this indicates the highest occurrence of that particular sender's email address

Is it because the list is automatically sorted? and which line indicates that？

Hi everyone. I do not know what's wrong with my code. Kindly help me

u must separate the From: and From

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
handle = open(name)
dic=dict()
for line in handle:
if not line.startswith("From:"): continue
line = line.split()
if line[1] in dic.keys():
dic[line[1]]+=1
else:
dic[line[1]]=1
line=[]

largest=-1

for key,value in dic.items():
if largest< value:
largest=value
key_max=key
print(key_max,largest)

name = input("Enter file:")
if len(name) < 1:
name = "mbox-short.txt"
handle = open(name)
dic = {}
for line in handle:
line = line.rstrip().split()
if "From" in line:
key = line[1]
if key not in dic:
dic[key] = 1
else:
dic[key] += 1
value_list = []
for key, value in dic.items():
if value == max(dic.values()):
ans1 = key
ans2 = value
print(ans1, ans2)

fname = open("mbox-short.txt")

dtc = dict()
update_dtc = dict()

for line in fname:
if line.startswith("From "):
linea = line.strip().split()
if linea[1] in dtc:
update_dtc[linea[1]] = int(dtc.get(linea[1])) + 1
dtc.update(update_dtc)
else:
update_dtc[linea[1]] = 1
dtc.update(update_dtc)

max_value = max(dtc.values())

for element in dtc:
if dtc[element] == max_value:
correo = element
result = dtc.get(element)

print(str(correo) + " " + str(result))

name = input("Enter file:")
counts = dict()
if len(name) < 1:
    name = "mbox-short.txt"
handle = open(name)
for line in handle:
    if line.startswith('From '):
        words = line.split()[1]
        counts[words] = counts.get(words,0) + 1
maxcount = None
maxword = None
for words,count in counts.items(): 
    if maxcount is None or count > maxcount:
        maxcount = count
        maxword = words

print (maxword,maxcount)

 
    
        
                    

if len(name) < 1:
    name = "mbox-short.txt"
handle = open(name)

db = list()
for word in handle:
    word= word.strip()
    if not word.startswith('From:'):
        continue
    word = word.split()
    word = word[1]
    db.append(word)

    counts = dict()
    for rows in db:
        counts[rows] = counts.get(rows,0) + 1

max_count = None
max_word = None
for word, count in counts.items():
    if max_count is None or count > max_count:
        max_count = count
        max_word = word
print(max_word,max_count)

Anyone knows why my code is not working? output is "cwen@iupui.edu 10" instead of
"cwen@iupui.edu 5". I think it is being double counted.

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

lst = list()
for line in handle:
if not line.startswith("From"): continue
line = line.split()
lst.append(line[1])

counts = dict()
for word in lst:
counts[word] = counts.get(word, 0) + 1

bigword = None
bigcount = None
for word,count in counts.items():
if bigcount is None or count > bigcount:
bigword = word
bigcount = count

print(bigword,bigcount)

Mine 💯

name = input("Enter file:")

handle = open(name)

leest = list()

for line in handle:
if line.startswith('From '):

    line2=line.strip()
    
    line3=line2.split()
    
    line4=line3[1]
    
    leest.append(line4)
    
    #print(line4)

#print(leest)

dct = dict()

for email in leest:

dct[email] = dct.get(email,0) + 1

#print(dct)

dct_items = dct.items()

#print(dct_items)

coutmail = None
countcount = None

for K,V in dct_items:
if countcount is None or V>countcount:

    countmail=K
    countcount=V

print(countmail,countcount)

This is mine:

name = input("Enter file:")
handle = open(name)
counts = dict()

for line in handle:
if line.startswith('From:'):
words = line.split()
word = words[1]
else: continue
counts[word] = counts.get(word, 0) + 1

bigcount = None
bigword = None
for aaa, bbb in counts.items():
if bigcount is None or bbb > bigcount:
bigcount = bbb
bigword = aaa
print('The most sender is' , bigword,'with this number --->' , bigcount)

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

lst = list()

for line in hand:
if not line.startswith("From:"): continue
line = line.split()
lst.append(line[1])

counts = dict()
for word in lst:
counts[word] = counts.get(word,0) + 1

bigcount = None
bigword = None
for word,count in counts.items():
if bigcount is None or count > bigcount:
bigcount = count
bigword = word

print (bigword,bigcount)

name = input("Enter file:")
if len(name) < 1:
    name = "mbox-short.txt"
handle = open(name, "r")

counts = dict()
big_value = None
big_Key = None

for line in handle:
    if line.startswith("From:"):
        words = line.split()
        word = words[1]
        word = word.strip()
        counts[word] = counts.get(word, 0) + 1

#print(counts)

for key, value in counts.items():
    if big_value is None or big_value < value:
        big_key = key
        big_value = value
        
print(big_key,big_value)