Hi there,
I ran your program on a Ubuntu 18.08 virtual machine via VMware Workstation 16 and I came across some problem, please take a look at it, thank you.
Details
The PLUMY(1) Baisc usage
sector (4): print(column[0])
came across this error: IndexError: list index out of range
It seems that the data.select function in sector(3) did not work right, there's no other error been reported in the program, can you take a look at this problem?
Sys info
Ubuntu 18.08
conda 4.12.0
python 3.9.7 [GCC 7.5.0]::Anaconda
IPython 7.29.0
jupyter_client 6.1.12
jupyter_core 40.8.1
jupyter_server 1.4.1
jupyterlab 3.2.1
other dependencies are up to date.