Python Pandas 面试题与答案

问题 1. What is Pandas in Python?

Pandas is an open-source data manipulation and analysis library for Python.

问题 2. How do you import the Pandas library?

import pandas as pd

问题 3. Explain the DataFrame in Pandas.

A DataFrame is a 2-dimensional labeled data structure with columns that can be of different types. It is similar to a spreadsheet or SQL table.

问题 4. How do you create a DataFrame in Pandas?

pd.DataFrame(data)

Example:

df = pd.DataFrame({'column1': [1, 2, 3], 'column2': ['a', 'b', 'c']})

问题 5. What is the difference between loc and iloc in Pandas?

loc is label-based indexing, and iloc is integer-based indexing.