python笔记：IO

#!python
#filename user_input.py
def reverse(text):
    return text[::-1]

def is_palindrome(text):
    return text==reverse(text)

something=input('Enter text:')
if(is_palindrome(something)):
    print('Yes, it is a palindrome')
else:
    print('No, it is not a palindrome')

#!python
#filename using_file.py
poem='''\
Programming is fun
When the work is done
if you wanna make your work also fun:
    use Python!
'''

f=open('poem.txt','w')
f.write(poem)
f.close()

f=open('poem.txt')
while True:
    line=f.readline()
    if len(line)==0:
        break
    print(line,end='')
f.close()

#!python
#filename pickling.py
import pickle

shoplistfile='shoplist.data'

shoplist=['apple','mango','carrot']

f=open(shoplistfile,'wb')
pickle.dump(shoplist,f)
f.close()

del shoplist

f=open(shoplistfile,'rb')
storedlist=pickle.load(f)
print(storedlist)