Demo of how to save/load some basic config using yaml

yaml_config_demo.py

import yaml

# store all your config in a dictionary
a = dict(setting_int=5, setting_string="string", setting_float=3.141) 
# change a value
a["setting_int"] =-10

# save to file
f = open("config.yaml", 'w')
f.write(yaml.dump(a))
f.close()

# reload it from the same file
b = yaml.load(open("config.yaml", 'r'))
b["setting_int"] # will print -10