Python - Standard Library Usage
What will this code print if the environment variable 'DEBUG' is not set?
import os
print(os.environ.get('DEBUG', 'false'))
What will this code print if the environment variable 'DEBUG' is not set? import os print(os.environ.get('DEBUG', 'false'))
medium📝 Predict Output Q5 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand os.environ.get with default
os.environ.get('DEBUG', 'false') returns the value of 'DEBUG' if set, else returns the default 'false'.Step 2: Given 'DEBUG' is not set
The code prints the default string 'false'.Final Answer:
false -> Option DQuick Check:
os.environ.get with default returns default if missing [OK]
Quick Trick: Use get(key, default) to avoid errors if env var missing [OK]
Common Mistakes:
MISTAKES- Expecting null instead of default value
- Assuming error occurs if variable missing
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