Python randint()用法及代码示例

# Python3 program explaining work 
# of randint() function 
  
# imports random module 
import random 
  
# Generates a random number between 
# a given positive range 
r1 = random.randint(0, 10) 
print("Random number between 0 and 10 is % s" % (r1)) 
  
# Generates a random number between  
# two given negative range 
r2 = random.randint(-10, -1) 
print("Random number between -10 and -1 is % d" % (r2)) 
  
# Generates a random number between  
# a positive and a negative range 
r3 = random.randint(-5, 5) 
print("Random number between -5 and 5 is % d" % (r3))

# imports random module 
import random 
  
'''If we pass floating point values as 
parameters in the randint() function'''
  
r1 = random.randint(1.23, 9.34) 
print(r1)

# imports random 
import random 
  
'''If we pass string or character literals as 
parameters in the randint() function'''
  
r2 = random.randint('a', 'z') 
print(r2)

# importing randint function 
# from random module 
from random import randint 
  
# Function which generates a new  
# random number everytime it executes 
def generator():
    return randint(1, 10) 
      
# Function takes user input and returns 
# true or false depending whether the 
# user wins the lucky draw! 
def rand_guess():
  
    # calls generator() which returns a 
    # random integer between 1 and 10 
    random_number = generator() 
      
    # defining the number of 
    # guesses the user gets 
    guess_left = 3
  
    # Setting a flag variable to check 
    # the win-condition for user 
    flag = 0
  
    # looping the number of times 
    # the user gets chances 
    while guess_left > 0:
  
        # Taking a input from the user 
        guess = int(input("Pick your number to "
                      "enter the lucky draw\n")) 
  
        # checking whether user's guess 
        # matches the generated win-condition 
        if guess == random_number:
  
            # setting flag as 1 if user guessses  
            # correctly and then loop is broken 
            flag = 1
            break
          
        else:
              
            # If user's choice doesn't match 
            # win-condition then it is printed 
            print("Wrong Guess!!") 
  
        # Decrementing number of  
        # guesses left by 1  
        guess_left -= 1
  
    # If win-condition is satisfied then, 
    # the function rand_guess returns True 
    if flag is 1:
        return True
  
    # Else the function returns False 
    else:
        return False
  
# Driver code 
if __name__ == '__main__':
    if rand_guess() is True:
        print("Congrats!! You Win.") 
    else :
        print("Sorry, You Lost!")