How will you print the contents of a file?
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of Python conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
The most robust and pythonic way to read and print file contents is using the with statement (context manager), which guarantees the file descriptor is safely closed even if an exception occurs:
# 1. Modern pathlib approach
from pathlib import Path
content = Path("report.txt").read_text(encoding="utf-8")
print(content)
# 2. Traditional context manager approach
with open("report.txt", "r", encoding="utf-8") as file:
for line in file:
print(line, end="") # Memory-efficient line-by-line reading for large files
*Best practice:* Always specify encoding="utf-8" explicitly to prevent decoding errors across operating systems.
Candidate Response Strategy & Interview Tips
- Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
- Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
- Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
- Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.