DF1:
City, 2015-12-31, 2016-01-31, ...
YYZ 562.14, -701.18, ...
DFW 562.14, -701.18, ...
YYC 562.14, -701.18, ...
DF2:
City, 2015-12-31, 2016-01-31, ...
SFO 562.14, -701.18, ...
PDX 562.14, -701.18, ...
LAX 562.14, -701.18, ...
我想从df2中减去df1.即减去各个日期列中的值.
我尝试了以下方法:
df2.subtract(df1, fill_value=0)
但是我收到以下错误:
TypeError: unsupported operand type(s) for -: 'str' and 'float'
我认为错误是因为操作无法理解如何在City列中减去字符串,这显然是有道理的,因为减去Cities是荒谬的.
这篇文章[链接]中接受的答案似乎表明这是可能的.我是这个问题的作者,但现在似乎无法让它发挥作用.