#!/usr/bin/env python
# coding: utf-8

# In[1]:


get_ipython().run_line_magic('matplotlib', 'inline')

import numpy as np
import matplotlib.pyplot as plt


# In[2]:


st = '20200202'
st == st[::-1]


# In[3]:


days = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]


# In[6]:


'3'.zfill(2)


# In[8]:


def palindrome(st):
    return st==st[::-1]


# In[14]:


for year in range(100):
    sty = str(2000+year)
    for m in range(1, 13):
        stm = sty + str(m).zfill(2)
        for d in range(1, days[m-1]+1):
            std = stm + str(d).zfill(2)
            if palindrome(std):
                print(std, '是回文日!')


# In[13]:


st


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