1. Data Types
This is a list of datatypes along with their short name and examples of how to use them:
| Name | Type | Description |
|---|---|---|
| Integers | int | Whole numbers, such as: 5, 98, 36234 |
| Floating Point Integers | float | Numbers with a decimal point: 5.34, 44.33, 1.0 |
| Strings | str | Ordered sequence of characters: "hello world", 'John', "100.0" "Saltwater Café" |
| Lists | list | Ordered sequence of objects: ["hello",10.00,"world"] |
| Dictionaries | dict | Unordered Key:Value pairs: {"firstName":"Jane","lastName":"Smith"} |
| Tuples | tup | Ordered immutable sequence of objects: ("hello",44,"world") |
| Sets | set | Unordered collection of unique objects: {"a","b","d"} |
| Booleans | bool | Logical value indicating True or False |
Numbers
Once we have our Python environment setup we can execute numerical calculations and obtain their results
Addition
4 + 4
= 8
Multiplication
2 * 2
= 4
Division
5 / 2
= 2.5
Division
7 / 4
= 1.75
Modulo or “Mod” can be used to find the remainder of a division operation
7 % 4
= 340 % 4
= 0
Power
2 ** 3
= 8
Order of Operations
2 + 3 * 4 + 2
= 16(2 + 3) * (4 + 2)
= 30
Strings
Strings are ordered sequences of characters, and we use single or double quotes to identify them.
Single quotes
‘hello’
Double quotes
“Hello
We can use double quotes to help when our string is a phrase that contains a single quote
“What’s up!”
Index
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | import sys #you can also assign individual arguments to a variable serverip=sys.argv[1] for commandlineargument in sys.argv: print("argument="+commandlineargument) #output ''' python3 arguments.py myArgument1 myArgument2 argument=arguments.py argument=myArgument1 argument=myArgument2 |
