Turn to the great god pandas a simple small problems, in the same dataframe one-to-many counting-CodePudding

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Turn to the great god pandas a simple small problems, in the same dataframe one-to-many counting

Time：12-05

Figure 2 is as a result, in the same dataframe one-to-many counting

CodePudding user response:

What does that mean?

CodePudding user response:

B in the column must have belonged to A what kind of logo, otherwise how statistics

CodePudding user response:

Learn about the groupby function