10 lines
200 B
Markdown
10 lines
200 B
Markdown
- [Basics](#basics)
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# Basics
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```python
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df.loc[:, "D"] = np.array([5] * len(df))
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df.loc[:, ["A", "B"]]
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df.sort_index(axis=1, ascending=False) #axis=1 sort columns by labels, axis=0 sort by index
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```
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