从numpy数组中提取列-无法哈希的数组

Question

I have a file of experimental data that I have parsed into a numpy array. I am attempting to extract the first column of the array into a variable using:

Thermo_Col = df[:,[0]]

where Thermo_Col is the column of temperatures and df is the numpy array

and I get an error

TypeError: unhashable type

Help

Answer 1

我认为df不是一个numpy数组，而是一个DataFrame，请尝试以下操作：

df.iloc[:, [0]]