specified python versoin for gitlab ci

1 job for 3-set-up-linter in 36 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Test
failed test:pylint #51208

00:00:36

 
Name Stage Failure
failed
test:pylint Test
src/main.py:1:0: W0611: Unused path imported from os (unused-import)
src/main.py:1:0: W0611: Unused makedirs imported from os (unused-import)
src/main.py:4:0: C0411: standard import "from datetime import date" should be placed before "import pandas as pd" (wrong-import-order)

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Your code has been rated at 8.27/10

Cleaning up file based variables
ERROR: Job failed: exit code 1