CODEWITHSUNDEEP
python
Dandy
Dandy

Reputation: 41

Python Read File Function is returning blank string

I am attempting to read a file per line (further down the line I will be splitting each line by comma). My program is reading that there are 10 lines with text in them however when I use the readline() function it returns a blank string.

I have tried to put the readline inside the linecount function, but that failed and I have also tried it with and without the file loop parameter.

QFile = open("questions.txt", "r")
lineCount = 0
fileloop = 0

for line in QFile:
    if line != "/n":
        lineCount = lineCount + 1
print(lineCount)
while fileloop < lineCount:
    print(QFile.readline(fileloop))
    fileloop += 1

A sample of my file

What is the name of the rugby compition with Scotland, England, Ierland, Wales, France and Italy?,Six Nations,Sport,1
What’s the maximum score you can achieve in 10-pin bowling?,300,Sport,1
Which horse is the only three-time winner of the Grand National?,Red Rum,Sport,1
Which country won both the men's and women's Six Nations in 2020?,England,Sport,1

Upvotes: 0

Views: 76

Answers (1)

hostingutilities.com
hostingutilities.com

Reputation: 9509

If you loop through a file a second time, you have to reset the file pointer first with QFile.seek(0) as indicated in the comments.

Getting the line count can be shortened down to

lineCount = len(QFile.readlines())
QFile.seek(0)

Or even better, just combine everything into one loop which is better performance-wise. If you are actually trying to print out everything except blank lines you would want something more along the lines of

nonEmptyLineCount = 0
for line in QFile:
    if line != '\n':
        print(line)
        nonEmptyLineCount += 1

Or alternatively

data = filter(lambda x: x != '\n', QFile)
for line in data:
    print(data)

Upvotes: 1

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