如果名称在给定日期内出现，则进行计数

def count_name_occurrences(names, start_date, end_date):
    count = 0
    for name in names:
        if start_date <= name.date <= end_date:
            count += 1
    return count

# 示例数据
name_list = [
    {'name': 'John', 'date': '2022-01-01'},
    {'name': 'Alice', 'date': '2022-01-02'},
    {'name': 'John', 'date': '2022-01-03'},
    {'name': 'Bob', 'date': '2022-01-04'},
    {'name': 'John', 'date': '2022-01-05'}
]
start = '2022-01-02'
end = '2022-01-04'

result = count_name_occurrences(name_list, start, end)
print(f"The name appears {result} times between {start} and {end}.")