Python Basics - Ananddgithub/Python GitHub Wiki

FYI :
case sensitive, letters (a-z), underscore, numbers (0-9), cannot add int with string, no space in bw twenty_one
values can be string or numbers, string should be with double quotes

sample code

x = "twenty_one "
y = "days"
z = x+y
print("two thousand and " + z)

output: two thousand and twenty_one days

if 10 > 8:
	print ("10 is greater than 8")    # spacing here is important
else :
	print ("10 is lesser than 8")

output: 10 is greater than 8

def sum(a,b):						# spacing here is important
	print(a-b)
c = sum(36,23)

output: 13

open cmd prompt, navigate to the location where python file is and run "python <filename>"

select the line and press ctrl+/ to comment

anand_age = 30						#int
anand_height = 5.9					#float
`anand_door_no = 45j`					# j -> complex, other alphabets are not allowed as values

print (type(anand_age))				#type -> will tell the type of number in the value
print (type(anand_age))
print (type(anand_door_no))

Output:
<class 'int'>
<class 'int'>
<class 'complex'>

anand_age = int(30.7)
anand_height = float(6)
anand_weight = int(96)
anand_previous_height = str(5.9)

print (anand_age)
print (anand_height)
print (anand_weight)
print (anand_previous_height)

Output:

30
6.0
96
5.9 									#"5.9 here is a string"

full_name = "Anand_Devanathan"
											Output
print (len(full_name))					16
print (full_name[0:5])					Anand				#index starts from 0 and uses square brackets
print (full_name[6:16])					Devanathan
print (full_name.lower())				anand_devanathan
print (full_name.upper())				ANAND_DEVANATHAN
print (full_name.strip())									#will trim the empty spaces before and after the declared value
print (full_name.replace("_", "."))	    Anand.Devanathan
print (full_name.split("_"))			['Anand', 'Devanathan']  		#will split your variable into individual variable

print ("Enter your first name : ")
print ("Enter your last name : ")

first_name = input()
last_name  = input()

print ("My full name is " + first_name + last_name)

Output:
Enter your first name :
Enter your last name :
Anand
 Devanathan
My full name is Anand Devanathan