对dataframe数据之间求补集的实例详解

#x为子集def Complement(x,y): import numpy as np array1 = np.array(x) list1=array1.tolist()  array2=np.array(y) list2=array2.tolist()  def list_to_tuple(t):  l = []  for e in t:   l.append(tuple(e))  return l  def tuple_to_list(t):  l = []  for e in t:   l.append(list(e))  return l  a=list_to_tuple(list1) b=list_to_tuple(list2) set3=set(b).difference(set(a)) list3=list(set3) list4=tuple_to_list(list3)  from pandas import Series,DataFrame df1=DataFrame(list4,columns=x.columns)  return df1