Python - File Reading and Writing Strategies
Which of the following Python code snippets correctly opens a file named
'data.txt' and reads its entire content into a variable text?Which of the following Python code snippets correctly opens a file named 'data.txt' and reads its entire content into a variable text?
easy🧠 Conceptual Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Opening file for reading
with open('data.txt', 'r') as f: text = f.read() usesopenwith mode 'r' (read) and awithstatement for safe handling.Step 2: Reading entire content
with open('data.txt', 'r') as f: text = f.read() callsf.read()which reads the whole file content intotext.Step 3: Other options
file = open('data.txt') text = file.readline() file.close() reads only one line withreadline(). with open('data.txt') as f: text = f.readlines() reads lines into a list, not a string. file = open('data.txt', 'w') text = file.read() file.close() opens file in write mode, so reading is invalid.Final Answer:
with open('data.txt', 'r') as f: text = f.read() correctly reads entire file content.Quick Check:
Usewith open(..., 'r')andread()for full content [OK]
Quick Trick: Use with open('file', 'r') and read() to get full content [OK]
Common Mistakes:
MISTAKES- Using write mode 'w' when intending to read.
- Using readline() instead of read() to get full content.
- Not closing the file or not using with statement.
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