Bird
Raised Fist0

Why does opening a file in mode "r" raise an error if the file does not exist?

hard🧠 Conceptual Q10 of Q15
Python - File Handling Fundamentals
Why does opening a file in mode "r" raise an error if the file does not exist?
ABecause "r" mode requires the file to exist for reading
BBecause "r" mode creates a new empty file
CBecause "r" mode truncates the file
DBecause "r" mode appends to the file
Step-by-Step Solution
Solution:

  1. Step 1: Understand "r" mode behavior

    "r" mode opens file for reading only and expects the file to exist.

  2. Step 2: Reason about error cause

    If file is missing, "r" mode cannot open it and raises FileNotFoundError.

  3. Final Answer:

    "r" mode requires existing file for reading -> Option A

  4. Quick Check:

    Read mode needs existing file [OK]
Quick Trick: Read mode errors if file missing [OK]
Common Mistakes:
MISTAKES
  • Thinking "r" creates file
  • Confusing truncate with read
  • Assuming append in read mode

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Python Quizzes
Advanced Exception Handling - Custom error messages - Quiz 7medium Class Methods and Static Methods - Class methods and cls usage - Quiz 6medium File Handling Fundamentals - File path handling - Quiz 12easy Methods and Behavior Definition - Modifying object state - Quiz 9hard Modules and Code Organization - Import aliasing - Quiz 9hard Modules and Code Organization - Why modules are needed - Quiz 3easy Modules and Code Organization - Import statement behavior - Quiz 7medium Multiple Inheritance and Method Resolution - Multiple inheritance syntax - Quiz 9hard Structured Data Files - Formatting structured data - Quiz 7medium Structured Data Files - Reading and writing CSV data - Quiz 6medium