目的：通过flag来实现跳出while循环

编译结果：无法跳出while循环

原因：input()输入的是字符串而不是False；同理，即便输入0，"等等，都被编译器认为是字符串而不是表示False

flag=True
while flag:
	print(flag)
	singer_name_input=input("which singer do you like?\n")
	album_name_input=input("what album of him do you like\n")
	flag=input("if you want to break,"+
		"just input False\n")
	print(flag)
def make_album(singer_name,album_name,songs_number=''):
	"""build a dictionary about albums"""
	if songs_number:
		collection={
			'singer_name':singer_name.title(),
			'album_name':album_name.title(),
			}
		collection['songs_number']=songs_number
	else:
		collection={
			'singer_name':singer_name.title(),
			'album_name':album_name.title(),
			}
	return collection
album=make_album(singer_name_input,album_name_input)
print(album)

 解决方案：如下

flag=True
while flag:
	singer_name_input=input("which singer do you like?\n")
	album_name_input=input("what album of him do you like\n")
	answer=input("if you want to break,"+
		"just input False\n")
	if answer=="False":
		flag=False