基础python代码

(^o^)/~完美

看完这段代码可以让我瞬间想起python的语法
 



# Open a file, read each line, and print it out
for line in open('file.txt'):
print line
# Create a file and write to it
file = open("text.txt","w")
file.write("test line\n")
file.close()
# Create a small dictionary of names and ages and manipulate
family = {'Megan':13, 'Elise':8, 'Marc':6}
# result in 8
print family['Elise']
# Remove the key/value pair
del family['Elise']
# Create a list and a function that doubles its input. Map the
# function to each of the elements of the list (creating a new list as a result)
arr = [1, 2, 3, 4, 5]
def double(x):return x*x
print map(double,arr)
# Create a class, inherit by another, and then instantiate it and invoke its methods
class Simple:
def __init__(self, name):
self.name = name;
def hello(self):
print self.name+"says hi."
class Simple2(Simple):
def goodbye(self):
print self.name+"says goodbye."
me = Simple2("Tim")
me.hello()
me.goodbye()