熊猫concat /合并列按循环

Question

我得到了如下所示的df：

data={"name":["T1","T2","tom","adi"],
  "number":["12","345","345","35"]}
df=pd.DataFrame.from_dict(data)
print(df)

并且我有for循环，在部分“名称” [“ T1”，“ tom”，“ adi”]上运行 我得到了每次迭代的新DataFrame，看起来像这样

data2={"name":["T1"],
  "new":["12"],"year":["1299"],"color":["blue"]}
df2=pd.DataFrame.from_dict(data2)
print(df2)

当我尝试在循环df= pd.concat([df, df2], axis=1)中执行concat时 我得到列[“ new”，“ year”，“ color”] 与迭代次数一样多 我希望每一列都出现一次且不超过一次。就像这里

data2={"name":["T1","T2","tom","adi"],
   "new":["12","nan","45","13"],
   "year":["1299","nan","1982","2000"],
   "color":["blue","nan","red","yellow"]}
df=pd.DataFrame.from_dict(data2)
print(df)