Python - Advanced Exception Handling
How can you use assert to check that a dictionary has a specific key before accessing it?
How can you use assert to check that a dictionary has a specific key before accessing it?
hard🚀 Application Q9 of Q15
Step-by-Step Solution
Solution:
Step 1: Recall how to check key presence in dict
Use 'key' in dict to check if key exists.Step 2: Evaluate options
assert 'key' in my_dict, 'Key missing in dictionary' uses correct syntax with assert and message.Final Answer:
assert 'key' in my_dict, 'Key missing in dictionary' -> Option CQuick Check:
Use 'in' keyword to assert key presence [OK]
Quick Trick: Use 'key' in dict to assert key exists [OK]
Common Mistakes:
MISTAKES- Using has_key() which is removed in Python 3
- Using get() without checking for None
- Assuming assert on dict[key] checks key presence
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