python返回一个我看不到的错误 SyntaxError: invalid syntax

Question

我正在编写一个程序来计算 DF 中的个人并按种族划分他们。问题是python给了我一个我认为没有意义的错误。这是我的代码：

dic_of_race = {"WBP":10, "PBZ":20, "PUL":40,"HAMP":60, "DUROC":70, "PIT":80, "990":90}
list_of_df = [DFl,DFr,DFm,DFk]

completeDF = pd.DataFrame()
for df in list_of_df:
    for race in dic_of_race:
        completeDF['race'] = race
        if df == DFl:
            completeDF['individual'] = 'fpig'
            femaleL = len(df[(df.race== dic_of_race[race])
        elif df == DFr:
            completeDF['individual'] = 'fpig'
            femaleR = len(df[(df.race== dic_of_race[race])
        elif df == DFk:
            completeDF['individual'] = 'knury'
            completeDF['quantity'] = len(df[(df.rasa == dic_of_race[race])
        elif df == DFm:
            if df['kp'] == 1:
                completeDF['individual'] = 'youngp'
                completeDF['quantity'] = len(df[(df.rasa == dic_of_race[race])
            elif df['kp'] == 2:
                completeDF['individual'] = 'youngpl'
                completeDF['quantity'] = len(df[(df.rasa == dic_of_race[race])

这是一个错误：

   elif df == DFr:
    ^
SyntaxError: invalid syntax

我不知道怎么了。 Elif 似乎是正确的。

Answer 1

每次你有len(df[(df.race== dic_of_race[race])，它都应该是len(df[(df.race== dic_of_race[race])]) - 你每次都错过了最后一个])。