Python 类型错误中的列表推导式任何人都请回答

问：

# given code

# Import the data file and have a look!
import pandas as pd
s = pd.read_csv("celsius.csv")
s.head()

def converter(x):
  return 1.8*x + 32

f = [converter(p) for p in s]  

TypeError                                 Traceback (most recent call last)
<ipython-input-16-e542ae5b13a4> in <cell line: 11>()
      9   return 1.8*x + 32
     10 
---> 11 f = [converter(p) for p in s]

1 frames
<ipython-input-16-e542ae5b13a4> in converter(x)
      7 
      8 def converter(x):
----> 9   return 1.8*x + 32
     10 
     11 f = [converter(p) for p in s]

TypeError: can't multiply sequence by non-int of type 'float'

谁能告诉我为什么它是错误的？