Learn Python in 10 minutes
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Learning the basics of python and how it works in less than 10 mins. Python is a great language for web development, data science and scripting.
Hello World
Let's just print a simple hello world message:
# hello.py
print('hello world')
Type python hello.py to execute.
Primitive Types
Python has four primitive types: int, float, bool, str.
# primitives.py
ten = 10 # int
pi = 3.14159265359 # float
yes = True # bool
no = False # bool
name = "John Wick" # str
print(ten, pi, yes, no, name, len(name))
$ python primitives.py
10 3.14159265359 True False John Wick 9
Data Types
Apart from the primitive types python has the following data types:
- Sequence Types: list, tuple, range
- Mapping Types: dict
- Set Types: set, frozenset
fruitsList = ["apple", "banana", "cherry"]
fruitsTuple = ("apple", "banana", "cherry")
fruitsSet = {"apple", "banana", "cherry"}
fruitsFrozenSet = frozenset({"apple", "banana", "cherry"})
x = range(6)
print ("list", fruitsList)
print ("tuple", fruitsTuple)
print ("set", fruitsSet)
print ("frozenSet", fruitsFrozenSet)
print ("range", x)
Operations
add = 3+2
print (add)
subtract = 3-2
print (subtract)
multiply = 3*2
print (multiply)
division = 3/2
print (division)
modulus = 3%2
print (modulus)
lessThan = 3<2
print (lessThan)
greaterThan = 3>2
print(greaterThan)
equals = 3==3
print (equals)
logicalAnd = (2==2) and (3==3) and (4==4)
print (logicalAnd)
logicalOr = (2==1) or (2==2) or (2==3)
print (logicalOr)
logicalNot = not (3==2)
print (logicalNot)
Loops
fruits = ["apple", "banana", "cherry"]
for x in fruits:
print(x)
# 0,1,2,3,4,5
for x in range(6):
print(x)
# 5,6,7,8,9,10
for x in range(5,11):
print(x)
Decision Making
x = int(input("Enter a number: "))
if x > 0:
print(x)
else:
print(-x)
Functions
def printme( str ):
"This prints a passed string into this function"
print(str)
return
printme("hello")
