115. Python’s random Module

Here are 10 Python code snippets demonstrating how to use Python's random module to generate pseudo-random numbers and perform various random operations.

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1. Generating a Random Integer

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import random

# Generate a random integer between 1 and 100
random_integer = random.randint(1, 100)
print(f"Random Integer: {random_integer}")

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2. Generating a Random Float

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import random

# Generate a random float between 0 and 1
random_float = random.random()
print(f"Random Float: {random_float}")

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3. Selecting a Random Item from a List

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import random

# Randomly select an item from a list
choices = ['apple', 'banana', 'cherry', 'date']
random_item = random.choice(choices)
print(f"Random Choice: {random_item}")

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4. Selecting Multiple Random Items

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import random

# Randomly select 3 items from a list
choices = ['apple', 'banana', 'cherry', 'date', 'elderberry']
random_items = random.sample(choices, 3)
print(f"Random Sample: {random_items}")

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5. Shuffling a List

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import random

# Shuffle the elements in a list
numbers = [1, 2, 3, 4, 5]
random.shuffle(numbers)
print(f"Shuffled List: {numbers}")

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6. Generating a Random Range

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import random

# Generate a random number from a range with a step
random_range = random.randrange(10, 50, 5)
print(f"Random Number from Range: {random_range}")

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7. Generating Random Numbers with a Normal Distribution

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import random

# Generate a random number with mean=0 and standard deviation=1
random_normal = random.gauss(mu=0, sigma=1)
print(f"Random Number (Normal Distribution): {random_normal}")

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8. Generating a Random Boolean

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import random

# Randomly generate True or False
random_boolean = random.choice([True, False])
print(f"Random Boolean: {random_boolean}")

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9. Generating a Random String

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import random
import string

# Generate a random string of 8 characters
random_string = ''.join(random.choices(string.ascii_letters + string.digits, k=8))
print(f"Random String: {random_string}")

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10. Generating Reproducible Random Results

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import random

# Set the seed for reproducibility
random.seed(42)

# Generate random numbers
print(f"Random Number 1: {random.randint(1, 100)}")
print(f"Random Number 2: {random.randint(1, 100)}")

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Summary:

The random module provides tools for:

• Generating random numbers (randint, random, randrange).

• Random selection (choice, sample).

• Shuffling (shuffle).

• Advanced distributions (e.g., gauss).

• Creating reproducible random results using seed.

Let me know if you'd like detailed explanations for any of these functions!