打开JUPTER NOTEBOOK，新建一个PYTHON文档。
n = input("Please input string: ")
print(n)我们首先让用户输入要进行判断的字符串，然后打印出来查看一下。
n = input("Please input string: ")
is_palidrome = n[::-1]
if n == is_palidrome:
print("This is a palidrome.")
else:
print("This is not a palidrome.")我们可以用IF语句来进行判断，判断倒向的是否等于正向的即可。
n = input("Please input string: ")
if n == n[::-1]:
print("This is a palidrome.")
else:
print("This is not a palidrome.")其实可以简化一下流程。
def reverse(n):
a = ""
for i in n[::-1]:
a = a + i
return a
n = input("Please input string: ")
a = reverse(n)
if n == a:
print("This is a palidrome.")
else:
print("This is not a palidrome.")也可以定义一个新的FUNCTION，然后进行判断。
def reverse(n):
a = ""
for i in range(len(n)):
a = a + n[len(n)-1-i]
return a
n = input("Please input string: ")
a = reverse(n)
if n == a:
print("This is a palidrome.")
else:
print("This is not a palidrome.")我们可以利用长度范围不断往回减去范围值，得到反向的字符串。
def reverse(n):
a = ""
for i in range(len(n)):
a = a + n[len(n)-1-i]
return a
n = input("Please input string: ")
a = reverse(n)
if n == a:
print("This is a palidrome.")
else:
print("This is not a palidrome.")继续做多种输入来进行判断。
