dictrev02.py

#!/usr/bin/python3
"""Reviewing how to work with dictionaries | Alta3 Research"""

def main():
    firewalldict = {'sip':'5060', 'ssh':'22', 'http':'80'}

    ## display the current state of our dictionary
    print(firewalldict)

    ## add another entry to the dict
    ## notice that https maps to an INT, not a STRING
    firewalldict['https'] = 443

    ## display the dict with the new entry for host4
    print(firewalldict)

    ## display some dictionary data
    print('The print statement can be passed multiple items, provided they are separated by commas')
    print("The port in use for HTTP Secure is:", firewalldict['https'])

    ## this SHOULD fail but it will not because we are using the .get method
    print("A safer way to recall that data is to use the .get method:", \
      firewalldict.get('razzledazzlerootbeer'))

    ## use the .keys method to return a list of keys
    print(firewalldict.keys())

    ## use the .values method to return a list of values
    print(firewalldict.values())

    ## remove a single key from the dict
    del firewalldict["sip"]
    print(firewalldict)

if __name__ == "__main__":
    main()