pandas merge() 缺少 1 个必需的位置参数：“正确”
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时间：2020-09-14 02:02:25 来源:igfitidea点击:
merge() missing 1 required positional argument: 'right'
提问by mishakisha
I am doing a tutorial and I have a problem: My code:
我正在做一个教程，但我有一个问题： 我的代码：
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))
and my error is:
我的错误是：
TypeError: merge() missing 1 required positional argument: 'right'
what's wrong?
怎么了？
回答by A.Kot
main_df.merge(df, how = "right")
回答by Vikika
rightbasically means the dataframe on the right side. In your case you should remove dffrom merge command and then choose right=df. This will work.
right基本上是指右侧的数据框。在您的情况下，您应该df从合并命令中删除，然后选择right=df. 这将起作用。
