NumPy - Creating Arrays
Which of the following is the correct syntax to create a 2D NumPy array with values 1, 2 in the first row and 3, 4 in the second row?
Which of the following is the correct syntax to create a 2D NumPy array with values 1, 2 in the first row and 3, 4 in the second row?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand 2D array creation syntax
NumPy expects a list of lists for 2D arrays, so nested brackets are needed.Step 2: Identify correct option
Only np.array([[1, 2], [3, 4]]) uses nested lists correctly: [[1, 2], [3, 4]].Final Answer:
np.array([[1, 2], [3, 4]]) -> Option AQuick Check:
2D array needs nested lists [OK]
Quick Trick: Use double brackets for 2D arrays in np.array [OK]
Common Mistakes:
- Missing nested brackets
- Passing multiple arguments instead of one list
- Using flat list for 2D array
Master "Creating Arrays" in NumPy
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