删除重复的元组列表

# 获取单字段
df1 = df["列名1"]
df2 = df["列名2"]
df1

# 打包数据
zipped = list(zip(df1, df2))
list1 = [list(i) for i in zipped]
list1

# 从python列表中删除重复的组合元组
for i in list1:
  i.sort()
mylist = list(set(map(tuple, list1)))

# 转换为dataframe
df = pd.DataFrame(mylist)