freeCodeCamp/curriculum/challenges/chinese/08-data-analysis-with-python/data-analysis-with-python-course/numpy-arrays.md

id, challengeType, videoId

id	challengeType	videoId
5e9a093a74c4063ca6f7c154	11	VDYVFHBL1AM

Description

More resources: - Notebook

Tests

question:
  text: |
    What will the following code print out?

    ```py
    A = np.array([
        ['a', 'b', 'c'],
        ['d', 'e', 'f'],
        ['g', 'h', 'i']
    ])

    print(A[:, :2])
    ```

  answers:
    - |
      ```python
      [['a' 'b']]
      ```
    - |
      ```py
      [['b' 'c']
      ['e' 'f']
      ['h' 'i']]
      ```
    - |
      ```py
      [['a' 'b']
      ['d' 'e']
      ['g' 'h']]
      ```
  solution: 3