我有这个密码
strMph = ""
numberplate = ""
print("Today we are going to determine how fast vehicles are going.")
while numberplate != "-1":
numberplate = str(input("Enter a numberplate or enter -1 to stop and show all vehicles that went over the speed limit "))
if numberplate != "-1":
name = str(input("Please enter the name of the owner of that car "))
adress = str(input("Please enter the adress of the owner of that car "))
distance = 30
time = float(input("How long did that take in seconds to travel between the two speed cameras that are 30 meters apart "))
speed = distance / time
mps = str(speed)
strMph = speed * 2.23
mph = str(strMph)
print("That is a speed of " +mps +" meters per second or " + mph+ " miles per hour ")
if strMph > 40:
valid = False
if (numberplate.count(numberplate.isalpha) == 5):
if (numberplate.count(int) == 2):
valid = True
else:
valid == False
if valid == True:
print("This numberplate is a standard numberplate")
file = open("IllegalPlates.txt", "a")
file.write("Numberplate")
file.write(numberplate)
file.write("Is a standard numberplate")
file.write("and belongs to")
file.write(name)
file.write("who lives at")
file.write(adress)
file.write(",")
file.close()
else:
print("This numberplate is not a standard numberplate")
file = open("IllegalPlates.txt", "a")
file.write("Numberplate")
file.write(numberplate)
file.write("Is not a standard numberplate")
file.write("and belongs to")
file.write(name)
file.write("who lives at")
file.write(adress)
file.write(",")
file.close()
else:
print ("The cars that will be reciving a ticket are ")
file = open("IllegalPlates.txt", "r")
print (file.readlines())
f = open("IllegalPlates.txt", 'w')
break
我得到了这个错误信息
^{pr2}$不起作用的是当我输入一个列表时,我所使用的验证车牌号的方法干扰了这一点。有人能帮忙吗?另外,我使用的是python3.6.0,我知道代码很混乱,我对此有点陌生。缩进可能不好,但我的代码中没有。建议会很好。在
这一行就是产生错误的那一行:
^{pr2}$isalpha
是一个函数,因此应该在它后面加上()
。但是,它仍然没有多大意义,因为它返回一个布尔值。 这个也很奇怪:你到底想达到什么目的?在
你想在这里做什么?该代码被构建为一个接一个地接受输入。你是说你想一次性输入多个值?在
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