python学习将数据写入文件并保存方法

file = open("ax.txt", 'w')
file.write('hskhfkdsnfdcbdkjs')
file.close()

d = {'a':'aaa','b':'bbb'}
s = str(d)
f = open('dict.txt','w')
f.writelines(s)
f.close()

def main():
	list1 = [['西瓜','兰州','first',20],['香蕉','西安','second',30],['苹果','银川','third',40],['桔子','四川','fourth',40]]
	output = open('data.xls','w',encoding='gbk')
	output.write('fruit\t place\t digital\t number\n')
	for i in range(len(list1)):
		for j in range(len(list1[i])):
			output.write(str(list1[i][j])+' ')
			output.write('\t')
		output.write('\n')
	output.close()
 
if __name__ == '__main__':
	main()