pandas导入导出数据
pandas导入导出数据：import pandas as pd data = pd.read_csv('student.csv') # 读取 print(data) data.to_pickle('student.pickle') # 保存
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一面分享，一面沉淀，左手代码，右手制造。pandas处理丢失数据
pandas处理丢失数据：import pandas as pd import numpy as np dates = pd.date_range('20190529', periods=4) df = pd.DataFrame(np.arange(16).reshape((4, 4)), index=dates, columns=['A', 'B', 'C', 'D']) df.ilo...
pandas选择数据
pandas选择数据：import pandas as pd import numpy as np dates = pd.date_range('20190524', periods=6) df = pd.DataFrame(np.arange(24).reshape((6, 4)), index=dates, columns=['A', 'B', 'C', 'D']) print(df)...
pandas基本介绍
pandas基本介绍：import pandas as pd import numpy as np s = pd.Series([1, 3, 6, np.nan, 44, 1]) print(s) """ 0 1.0 1 3.0 2 6.0 3 NaN 4 44.0 5 1.0 dtype: float64 &qu...