熊猫数据框追加问题

Question

Any idea why pandas dataframe append is inserting NaN values for only 3 columns out of 50 columns where as dictionary has the real value

checking whether dict has proper values or not before appending, its shows real values:

 for x,y in dict.items():
     print(x, '-', y)

but after appending to dataframe its showing as NaN, no clue why its happening.

df = df.append(dict,ignore_index=True,sort=False)

Any idea where its going wrong ?

Answer 1

dict 必须是数据框或系列

DataFrame.append(df, dict, ignore_index=False, verify_integrity=False, sort=None)

Answer 2

Sorry i wasted a lot of time. i am seeing df.head() and assuming i didnt get the proper data but after seeing df values got inserted properly :)