read existing STEP files

[EgonScofield]

Hello,
i want to make a program, that extracts the name of parts out of a STEP file. For this i m using the p21.py and the Functions p21.readfile().
` stepfile = p21.readfile(FNAME) #works fine

 stepfile = p21.readfile("C:\Users\maxim\Desktop\...\plate203.STEP") # doesnt work

`
I dont have a clue why it doesnt work. I tried to modify the path with an r in front of it, etc. Nothing works...
Thanks for your help :)
Greetings
Egon

[IDONTSUDO]

from steputils import p21

FNAME = "./1.STEP"

try:

stepFile = p21.load(open(FNAME))
print(dir(stepFile))
except IOError as e:
print(e)

else:
print(f'File {FNAME} is a valid STEP-file')