from pathlib import Path

# initial configuration of a gpio, or changing it between input and output:
Path('/dev/gpio/P2_35/direction').write_text('in')      # configure as input
Path('/dev/gpio/P2_35/direction').write_text('low')     # configure as output, initially low
Path('/dev/gpio/P2_35/direction').write_text('high')    # configure as output, initially high

# if configured as input, can read value with:
value = int( Path('/dev/gpio/P2_35/value').read_text() )
# value is 0 (for low) or 1 (for high)

# if configured as output, change value with:
Path('/dev/gpio/P2_35/value').write_text('0')  # set low
Path('/dev/gpio/P2_35/value').write_text('1')  # set high