Python中的条件计数

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
count = 0

for num in data:
    if num % 2 == 0:
        count += 1

print("偶数的数量:", count)

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
count = sum(1 for num in data if num % 2 == 0)
print("偶数的数量:", count)

import pandas as pd

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
df = pd.DataFrame(data, columns=['numbers'])
count = df[df['numbers'] % 2 == 0].shape[0]
print("偶数的数量:", count)

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
count = sum(1 for num in data if isinstance(num, int) and num % 2 == 0)
print("偶数的数量:", count)

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
count = sum(1 for num in data if num % 2 == 0)
print("偶数的数量:", count)