使用字典中的键验证表行的数据属性

# 定义验证规则的字典
validation_rules = {
    'name': {
        'required': True,
        'type': str,
        'min_length': 2,
        'max_length': 50
    },
    'age': {
        'required': True,
        'type': int,
        'min_value': 0,
        'max_value': 150
    },
    'email': {
        'required': False,
        'type': str,
        'pattern': r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$'
    }
}

# 获取表中的行数据
row_data = {
    'name': 'John Doe',
    'age': 25,
    'email': 'johndoe@example.com'
}

# 验证表中的数据属性
for key, rules in validation_rules.items():
    if key in row_data:
        value = row_data[key]
        if 'required' in rules and rules['required'] and not value:
            print(f"Error: {key} is required.")
        elif 'type' in rules and not isinstance(value, rules['type']):
            print(f"Error: {key} should be of type {rules['type']}.")
        elif 'min_length' in rules and len(value) < rules['min_length']:
            print(f"Error: {key} should have a minimum length of {rules['min_length']}.")
        elif 'max_length' in rules and len(value) > rules['max_length']:
            print(f"Error: {key} should have a maximum length of {rules['max_length']}.")
        elif 'min_value' in rules and value < rules['min_value']:
            print(f"Error: {key} should have a minimum value of {rules['min_value']}.")
        elif 'max_value' in rules and value > rules['max_value']:
            print(f"Error: {key} should have a maximum value of {rules['max_value']}.")
        elif 'pattern' in rules and not re.match(rules['pattern'], value):
            print(f"Error: {key} should match the pattern {rules['pattern']}.")
    else:
        print(f"Error: {key} is missing.")

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