Question

我正在玩下面的代码，但不知道为什么它给了我这个语法错误：

def isSupport(df,i):
    support = df['Low'][i] < df['Low'][i-1]    and df['Low'][i] <
     df['Low'][i+1] and df['Low'][i+1] < df['Low'][i+2] and 
     df['Low'][i-1] < df['Low'][i-2]

     return support

Answer 1

您还可以使用括号来对齐多行语句：

support = (df['Low'][i] < df['Low'][i - 1] and 
          df['Low'][i] < df['Low'][i + 1] and 
          df['Low'][i + 1] < df['Low'][i + 2] and 
          df['Low'][i - 1] < df['Low'][i - 2])

Answer 2

你可以

用括号括起来

support = (df['Low'][i] < df['Low'][i - 1] and
           df['Low'][i] < df['Low'][i + 1] and
           df['Low'][i + 1] < df['Low'][i + 2] and
           df['Low'][i - 1] < df['Low'][i - 2])

把它们放在同一行

support = df['Low'][i] < df['Low'][i - 1] and df['Low'][i] < df['Low'][i + 1] and df['Low'][i + 1] < df['Low'][i + 2] and df['Low'][i - 1] < df['Low'][i - 2]

使用 \ 表示换行

support = df['Low'][i] < df['Low'][i - 1] and \
          df['Low'][i] < df['Low'][i + 1] and \
          df['Low'][i + 1] < df['Low'][i + 2] and \
          df['Low'][i - 1] < df['Low'][i - 2]

<语法错误：语法无效

2 个答案: