Random numbers in Python

Explanation

Python has few functions for generating random numbers. They can be used in a lot of games, lotteries etc. where random numbers are required to get generate.

There are some functions which generates the random numbers −

choice()

This function can be used to generate one random number from a collection of numbers.

Example

print ("A random number from list  : ",end="") 
print (random.choice([1, 4, 6, 100, 31]))

Output

A random number from list : 100

randrange(beg, end, step)

This function is used to generate number randomly but within a specific range in its arguments. This function takes 3 arguments, beginning number, last number and step.

Example

print ("A random number from range  : ",end="") 
print (random.randrange(2, 10, 3)) 

Output

A random number from range : 8

random()

This function generates a float random number less than 1 and also greater than or equal to 0.

Example

print ("A random number between 0 to 1  : ", end="") 
print (random.random()) 

Output

A random number between 0 to 1  :0.42487645546

shuffle()

This function shuffle the list and randomly arrange them.

Example

list = [1, 3, 5, 10, 4] 
print (" list before shuffling  : ", end="") 
for j in range(0, len(list)): 
   print (list[j], end=" ") 
print("\r") 
random.shuffle(list) 
print ("list after shuffling : ", end="") 
for j in range(0, len(list)): 
   print (list[j], end=" ") 
   print("\r") 

Output

list before shuffling  : 1 3 5 10 4 
list after shuffling  : 3 10 1 4 5 

uniform(a, b)

This function generates a floating point number randomly between the numbers mentioned in arguments. It takes two arguments, lower limit and upper limit.

Example

print (" random floating point number between 6 and 11  is : ",end="") 
print (random.uniform(6,11)) 

Output

The random floating point number between 6 and 11 is : 7.18036982355346