python - 当我将变量写入文本文件时，为什么会得到 'none'

Question

我的代码中出现的问题是任何变量(在本例中为 time 和 option_1 )写入文本文件会输出“none”作为实际文本文件中的结果。

time=print ("This is the time and date: " 
,datetime.datetime.now().strftime("%y-%m-%d-%H-%M"))
option_1=print("50p for 1 hour(S) stay")  
with open("recipt.txt", "w") as recipt:
     recipt.write("you time\n {}".format(time))
     recipt.write("the time you stayed for and your payment\n 
{}".format(option_1))
     recipt.close()

提前致谢

Answer 1

print 函数返回None。您想要构建一个 str 对象而不是使用 print。

time= "This is the time and date: " + datetime.datetime.now().strftime("%y-%m-%d-%H-%M")
option_1= "50p for 1 hour(S) stay"