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我在做一個教程,我有一個問題: 我的代碼:合併()失蹤1個人需要的位置參數: '右'
import html5lib
import quandl
import pandas as pd
import pickle
pd.read_html("https://simple.wikipedia.org/wiki/List_of_U.S._states")
main_df = pd.DataFrame()
fiddy_states = pd.read_html('https://simple.wikipedia.org/wiki/List_of_U.S._states')
for abbv in fiddy_states[0][0][1:]:
query = "FMAC/HPI_"+str(abbv)
df = quandl.get(query)
if main_df.empty:
main_df = df
else:
main_df = pd.merge (main_df , df, how = "right")
print(pd.merge(main_df))
和我的錯誤是:
TypeError: merge() missing 1 required positional argument: 'right'
有什麼不對?
pd.merge(main_df,df,how =「right」)缺少一個參數'on'。 –
pd.merge(main_df,df,how =「right」,on ='something') –
'merge'是一個數據框方法,應該像這樣使用:'main_df.merge(df,how =「right」)' – IanS