| Section | Video Links |
|---|---|
| Chain of Responsibility |    |
| Use Case | |
| Python Floor Division | |
| Accepting User Input | |
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python ./chain_of_responsibility/chain_of_responsibility_concept.py
Successor1 payload = 1
Successor2 payload = -1
Successor2 payload = -0.5
Successor2 payload = -0.25
Successor1 payload = -0.5
Successor1 payload = 0.5
Successor2 payload = -1.5
Finished result = -1.5... Refer to Book, pause Video Lectures or subscribe to Medium Membership to read textual content.
python ./chain_of_responsibility/client.py
Enter amount to withdrawal : 180
Dispensing 3 £50 note(s)
Dispensing 1 £20 note(s)
Dispensing 1 £10 note
Now go spoil yourselfNormally division uses a single / character and will return a float even if the numbers are integers or exactly divisible with no remainder,
E.g.,
PS> python
>>> 9 / 3
3.0Python Version 3 also has an option to return an integer version (floor) of the number by using the double // characters instead.
PS> python
>>> 9 // 3
3See PEP-0238 : https://www.python.org/dev/peps/pep-0238/
In the file /chain_of_responsibility/client.py above, there is a command input .
The input command allows your script to accept user input from the command prompt.
In the ATM example, when you start it, it will ask the user to enter a number.
Then when the user presses the enter key, the input is converted to an integer and the value tested if valid.
AMOUNT = int(input("Enter amount to withdrawal : "))
if AMOUNT < 10 or AMOUNT % 10 != 0:
...continueNote that in Python 2.x, use the raw_input() command instead of input() .
See PEP-3111 : https://www.python.org/dev/peps/pep-3111/
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