Charles Rice or1gb1u3

## Writing better python code.md

      
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                kracekumar
                / Writing better python code.md
            
            
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              February 19, 2024 03:06
            
              
                Talk I gave at June bangpypers meetup. 
              
          
    Writing better python code


Swapping variables

Bad code


## reader.py
import csv
from jinja2 import Template,FileSystemLoader,Environment

loader = FileSystemLoader('templates')
env = Environment(loader=FileSystemLoader('templates'))

tmp=[]
hostgroups=set()
hosts = csv.reader(open('hosts.csv'), delimiter=',', quotechar='"')
for h in hosts:

## bb-python-gpio-test.py
#!/usr/bin/python
# time module is needed for sleep function:
import time

# Open up the pins and set mode in/out
# TODO: Error handling
setupPin = file("/sys/class/gpio/export", "w")
setupPin.write("%d" % (38))
setupPin.close()
	import csv
	from jinja2 import Template,FileSystemLoader,Environment

	loader = FileSystemLoader('templates')
	env = Environment(loader=FileSystemLoader('templates'))

	tmp=[]
	hostgroups=set()
	hosts = csv.reader(open('hosts.csv'), delimiter=',', quotechar='"')
	for h in hosts:
	#!/usr/bin/python
	# time module is needed for sleep function:
	import time

	# Open up the pins and set mode in/out
	# TODO: Error handling
	setupPin = file("/sys/class/gpio/export", "w")
	setupPin.write("%d" % (38))
	setupPin.close()