Charming the Python: the basic basics

If coding tutorials with math examples are the bane of your existence, keep reading. This series uses relatable examples like dogs and cats.

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Background

I have experience with Python, but saw this 30 day challenge and decided it could only help.

30 Days Of Python Challenge

Asabeneh ・ Nov 20 '19

#python #javascript #react #mongodb

So, I went to the challenge content, added the Telegram group, and started to read day 1.

Link: Day 1 content
Note: This challenge was built to be beginner friendly and help people learn Python.

Day 1 Topics

• installing python
• a simple script in IDLE
• addressing a syntax error
• math operators
• commenting
• installing VS Code
• starting with VS Code
• Data Types
• Exercises

link to day 1 material

Math Operators

Addition +

a =  3
b =  4
print(a + b)  # 3 + 4 = 7

Subtraction -

a =  3
b =  4
print(a - b)  # 3 - 4 = -1

Muliplication *

a =  3
b =  4
print(a * b)  # 3 * 4 = 12

Division /

a =  3
b =  4
print(a / b)  # 3 / 4 = .75

Exponent **

a =  3
b =  4
print(a ** b)  # 3 ** 4 = 81

The ** is taking care of the exponent. If broken down it would look like 3 * 3 * 3 * 3

Modulo %

a =  10
b =  3
print(a % b)  # modulo 10 % 3 = 1

Use this operator if you only want the remainder or whats left over after the division. In this example, we've done 10 / 3 which give us 3 groups of 3 and a remainder of 1.

This could be used dividing time. You can use the remainder for the next smaller unit of time.

Floor Division //

a =  10
b =  3
print(a // b)  # floor division 10 // 3 = 3

This is important to use when you can only have whole things. For example you can't have .5 of a person or .2 of a plane. So, you would round down so you're only using whole people and whole planes.

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Data Types

Type	What	Example
Integer	whole numbers	1
Float	decimals	1.1
Boolean	True or False	True
String	characters in quotes	"4 bunch of ch4r4ct3r5!"
List	in order; may have different data types	['Dog', 9, False, 3.142]
Dictionary	key:value pairs	{"name":"Wiley", "breed":"unknown", age:2, "is_nuetered":True}
Tuple	cannot be changed	('Vicki', 1992, 'E5')
Set	may only have unique elements and may store different data types	My name is Vicki, but a set would be {'v', 'i', 'c', 'k'}

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Series based on

30 Days Of Python Challenge

Asabeneh ・ Nov 20 '19

#python #javascript #react #mongodb

Comments

[Asabeneh]

I just saw your notes. You are amazing. Keep going! Day 3 has been release:github.com/Asabeneh/30-Days-Of-Python