使用Python while循环计数：统计5次抛硬币的正反面次数

Alright, let's build this coin flip counter step by step. The goal is to run exactly 5 flips, track how many times heads and tails come up, then print the totals. Here's a straightforward implementation:

import random

# Initialize counters for heads and tails
heads = 0
tails = 0
flip_count = 0

# Loop until we've done 5 flips
while flip_count < 5:
    # Simulate a coin flip: randomly choose heads or tails
    result = random.choice(["heads", "tails"])
    
    # Update the corresponding counter
    if result == "heads":
        heads += 1
    else:
        tails += 1
    
    # Increment the flip count to avoid an infinite loop
    flip_count += 1

# Print the final results
print(f"- Heads was {heads} times")
print(f"- Tails was {tails} times")

Let me break down what's happening here: #

• We start by importing the random module to simulate the randomness of a real coin flip.
• heads and tails start at 0—these will keep track of how many times each outcome occurs.
• flip_count tracks how many flips we've completed; we keep the loop running as long as this number is less than 5.
• random.choice(["heads", "tails"]) picks one of the two options at random, just like flipping a coin.
• After each flip, we check the result and add 1 to the matching counter, then increment flip_count to make sure we don't loop forever.
• Finally, we use formatted strings to print out the totals in the exact format you're looking for.

Example Output: #

• Heads was 3 times
• Tails was 2 times

内容的提问来源于stack exchange，提问作者Peter