This is the code:

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

counts = dict()
filetext = handle.read()
for line in handle:
    words = line.split()
    for word in words:
        counts[word] = counts.get(word, 0)   1
print(words)
print(counts)
bigcount = None
bigword = None
for word,count in counts.items():
    if bigcount == None or count > bigcount:
        bigword = word
        bigcount = count

print(filetext)
print("Most common word: ", bigword, bigcount)
print(counts.items())

this is the output:
Enter file: pls.txt
Traceback (most recent call last):
  File "D:\Tools\Coding\PyCharm Community Edition 
2021.2.3\bin\pythonProject2\Mostcommonword.py", line 10, in <module>
    print(words)
NameError: name 'words' is not defined

Process finished with exit code 1

When running the program, instead of returning the most common number, it returned None. I managed to find out that the reason for that is that the "words" list is completely empty, for some reason. The good thing about simple problems is that I know what's going on. The bad thing is that there are not many ways to fix it at all.

CodePudding user response：

After you do handle.read(), the file is positioned at end-of-file. There's nothing left for the for line in handle: to read. You either need to rewind in between (handle.seek(0)), or just skip the first read altogether.

CodePudding user response：

You could consider building a list of lines as you iterate over the file handle rather than doing a read/seek. Also, you can work out the most frequently occurring word as you work through the file rather than doing a second pass of your dictionary. Something like this:

D = dict()
M = 0
B = None
C = list()
with open('<Your filename goes here>') as txt:
    for line in txt:
        C.append(line)
        for word in line.strip().split():
            D[word] = D.get(word, 0)   1
            if D[word] > M:
                B = word
                M = D[word]

print(''.join(C))
print(f'Most common word with {M} occurrences is {B}')