Python 列表的添加-append函数

列表的添加-append函数

功能

• 将一个元素添加到当前列表中

用法

• list.append(new_item)

参数

• new_item:添加进列表的新的元素(成员)

注意事项

• 被添加的元素只会被添加到末尾
• append函数是在原有列表的基础上添加,不需要额外添加新的变量

代码

	# coding:utf-8
	books = []
	print(id(books))
	books.append('python入门课程')
	print(books)
	print(id(books))
	number = 1.1
	tuple_test = (1, )
	dict_test = {'name': 'dewei'}
	books.append(number)
	books.append(tuple_test)
	books.append(dict_test)
	books.append('diango')
	books.append(1)
	books.append('')
	books.append(True)
	print(books)
	print(id(books))
	book_1 = ['西游记', '红楼梦']
	book_2 = ['三国演义', '水浒传']
	print(id(book_1))
	book_1 = book_1 + book_2 # id改变
	book_1 += book_2 # id不变
	print(book_1)
	print(id(book_1))

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