How to search for records that meet the conditions in Python?

In Python, you can use list comprehensions or the filter() function to find records that meet certain conditions.

1. List comprehension allows you to create a new list containing elements that meet specific conditions.

Sample code:

records = [{'name': 'Alice', 'age': 25},
           {'name': 'Bob', 'age': 30},
           {'name': 'Charlie', 'age': 35}]

# 查找年龄大于30的记录
filtered_records = [record for record in records if record['age'] > 30]
print(filtered_records)

Output result:

[{'name': 'Charlie', 'age': 35}]

1. The filter() function takes a function and an iterable as arguments, and returns an iterator containing elements that meet the function’s criteria.

Sample code:

records = [{'name': 'Alice', 'age': 25},
           {'name': 'Bob', 'age': 30},
           {'name': 'Charlie', 'age': 35}]

# 定义一个函数，判断记录的年龄是否大于30
def filter_age(record):
    return record['age'] > 30

# 使用filter()函数筛选满足条件的记录
filtered_records = list(filter(filter_age, records))
print(filtered_records)

Output result:

[{'name': 'Charlie', 'age': 35}]

Whether using list comprehension or the filter() function, you can search for records that meet your criteria based on your own needs.