Python file handling MCQ questions with answers

Question 1 · Easy

What is the output of this code?

with open("notes.txt", "w") as f:
    f.write("Hello")
    f.write("World")

with open("notes.txt") as f:
    print(f.read())

• AHello World
• BHello World
• CWorld
• DHelloWorld

Question 2 · Easy

What is the output of this code?

with open("log.txt", "w") as f:
    f.write("one\n")

with open("log.txt", "a") as f:
    f.write("two\n")

with open("log.txt") as f:
    print(f.read().split())

• A['two']
• B['one', 'two']
• C['one\n', 'two\n']
• D['one']

Question 3 · Easy

What is the output of this code?

with open("story.txt", "w") as f:
    f.write("the cat sat\non the mat\n")

with open("story.txt") as f:
    words = f.read().split()
print(len(words), words.count("the"))

• A6 2
• B2 2
• C6 1
• D5 2

Question 4 · Medium

What is the output of this code?

with open("poem.txt", "w") as f:
    f.write("Roses are red\nViolets are blue\nSugar is sweet\n")

with open("poem.txt") as f:
    line = f.readline()
    print(line)
    print(f.readline(), end="")

• ARoses are red Violets are blue
• BRoses are red Roses are red
• CRoses are red Violets are blue
• DRoses are red Roses are red

Question 5 · Medium

What is the output of this code?

with open("data.txt", "w") as f:
    f.write("a\nb\nc")

with open("data.txt") as f:
    lines = f.readlines()
print(lines, len(lines))

• A['a\n', 'b\n', 'c'] 3
• B['a', 'b', 'c'] 3
• C['a\n', 'b\n', 'c\n'] 3
• D['a\nb\nc'] 1

Question 6 · Medium

What is the output of this code?

with open("code.txt", "w") as f:
    f.write("ABCDEFGH")

with open("code.txt") as f:
    first = f.read(3)
    pos = f.tell()
    f.seek(1)
    print(first, pos, f.read(2))

• AABC 4 BC
• BABC 3 DE
• CABC 3 BC
• DABC 3 AB

Question 7 · Medium

What is the output of this code?

with open("items.txt", "w") as f:
    f.writelines(["pen", "ink", "nib"])

with open("items.txt") as f:
    print(f.readlines())

• A['pen', 'ink', 'nib']
• B['pen\n', 'ink\n', 'nib\n']
• C['pen\n', 'ink\n', 'nib']
• D['peninknib']

Question 8 · Medium

What is the output of this code?

import csv

with open("marks.csv", "w", newline="") as f:
    writer = csv.writer(f)
    writer.writerow(["name", "marks"])
    writer.writerow(["Asha", 91])

with open("marks.csv", newline="") as f:
    for row in csv.reader(f):
        print(row)

• A['name', 'marks'] ['Asha', 91]
• B['name', 'marks'] ['Asha', '91']
• Cname,marks Asha,91
• D['name', 'marks', 'Asha', '91']

Question 9 · Hard

What is the output of this code?

with open("scores.txt", "w+") as f:
    f.write("90 85 77")
    print(repr(f.read()))
    f.seek(0)
    print(f.read().split())

• A'90 85 77' ['90', '85', '77']
• B'' ['90', '85', '77']
• C'' []
• D'90 85 77' [90, 85, 77]

Question 10 · Hard

What is the output of this code?

with open("names.txt", "w") as f:
    f.write("Anna\nBob\nRiya")

count = 0
with open("names.txt") as f:
    for line in f:
        if line.endswith("a"):
            count += 1
print(count)

• A2
• B0
• C3
• D1

Question 11 · Hard

What is the output of this code?

import json

point = {"x": (3, 4)}
with open("point.json", "w") as f:
    json.dump(point, f)

with open("point.json") as f:
    loaded = json.load(f)
print(loaded, loaded == point)

• A{'x': (3, 4)} True
• B{'x': [3, 4]} True
• C{'x': [3, 4]} False
• D{"x": [3, 4]} False

Question 12 · Hard

What is the output of this code?

with open("word.txt", "w") as f:
    f.write("python")

with open("word.txt", "r+") as f:
    f.write("PY")

with open("word.txt") as f:
    print(f.read())

• APYthon
• BPY
• CPYpython
• DpythonPY

Question 13 · Easy

Which error does this code raise?

with open("notes.txt", "w") as f:
    f.write("Buy milk")

with open("note.txt") as f:
    print(f.read())

• ANameError: name 'note' is not defined
• BValueError: I/O operation on closed file
• CFileNotFoundError: No such file or directory: 'note.txt'
• DIt prints an empty line, because note.txt is created

Question 14 · Easy

Which error does this code raise?

with open("marks.txt", "w") as f:
    f.write("Total: ")
    f.write(95)

with open("marks.txt") as f:
    print(f.read())

• ATypeError: write() argument must be str, not int
• BValueError: invalid literal for write(): 95
• CIt prints Total: 95
• DAttributeError: 'int' object has no attribute 'write'

Question 15 · Medium

What happens when this code runs?

with open("diary.txt", "w") as f:
    f.write("Day 1\n")
f.write("Day 2\n")

with open("diary.txt") as f:
    print(f.read())

• AIt prints Day 1 and Day 2 on two lines
• BValueError: I/O operation on closed file.
• CFileNotFoundError: No such file or directory: 'diary.txt'
• DPermissionError: Permission denied: 'diary.txt'

Question 16 · Easy

Which mode opens a text file for writing and erases anything it already holds?

• A'a'
• B'r+'
• C'x'
• D'w'

Question 17 · Medium

What happens when a program runs open("report.txt", "x") and report.txt already exists?

• AThe file is erased and opened for writing
• BThe file is opened for appending
• CThe file is opened for reading only
• DFileExistsError is raised

Question 18 · Easy

Why is with open(...) as f: preferred to calling open() and close() yourself?

• AIt reads the file faster
• BIt closes the file when the block ends, even if an error occurs
• CIt loads the whole file into memory at once
• DIt lets two programs write to the file at the same time

Question 19 · Medium

notes.txt holds the lines one and two. Which code prints them on two lines with no blank line between them?

• Awith open("notes.txt") as f: for line in f: print(line)
• Bwith open("notes.txt") as f: for line in f.read(): print(line)
• Cwith open("notes.txt") as f: for line in f: print(line.rstrip("\n"))
• Dwith open("notes.txt") as f: print(f.readline())

Question 20 · Easy

Which code stores the number of lines in data.txt in count?

• Awith open("data.txt") as f: count = len(f.readlines())
• Bwith open("data.txt") as f: count = len(f.read())
• Cwith open("data.txt") as f: count = len(f.readline())
• Dwith open("data.txt") as f: count = f.read().count(" ")