我发现您的代码存在以下问题：变量名不能以数字开头：1in

您有未定义的变量Y。我想您想与字符串文本进行比较，所以改为写"Y"。在

python的if运算符中不需要括号，但后面必须有冒号。else也是如此。在

一个系数列表肯定比一堆变量更好。在

它是raw_input，不是{}

虽然只执行int(k5)将验证值(如果字符串不代表整数，则引发异常)，但它不会影响变量，因此k5仍将包含一个字符串。在

我想这并不是为了显示你的代码，而是为了显示你的代码。所以。。。我会这样做的：# There are no do...while-style loops in Python, so we'll do it this way

# loop forever, and break when confirmation prompt gets "y"

while True:

k = [] # That's an empty list.

# I'm assuming Python 2.x here. Add parentheses for Python 3.x.

print "Derivatives:"

# This range will work like a list [5, 4, 3, 2, 1].

for n in range(5, 1, -1):

k.append(int(raw_input("Enter {0}th degree + coefficient: ".format(n)))

## Or you could do it this way:

#for num in ["5th", "4th", "3rd", "2nd", "1st"]:

# k.append(int(raw_input("Enter {0} degree + coefficient: ".format(num)))

k.append(int(raw_input("Enter constant: ".format(n)))

# Here's a bit tricky part - a list comprehension.

# Read on those, they're useful.

# We need the comprehension, because our list is full of ints,

# and join experts a list of strings.

print " ".join(str(x) for x in k)

## If you didn't get the previous line - that's fine,

## it's fairly advanced subject. Just do like you're used to:

#print k[0], " ", k[1], " ", k[2], " ", k[3], " ", k[4], " ", k[5]

# Oh, and did you notice 5th coeff. is at k[0]?

# That's because we appended them to the list in reverse order.

# Let's reverse the list in-place, so the constant will be k[0] and so on.

k.reverse()

# You don't always need an intermediate variable for single-use values,

# like when asking for confirmation. Just put raw_input call directly

# in if statement condition - it would work just fine.

#

# And let's be case-insensitive here and accept both "Y" and "y"

if raw_input("Correct [Y/N]? ").lower() == "y":

break