#编译方式，python3 文件名
#!/usr/bin/python3
#print('hello world')
mystring = 'hello world'
print (mystring)
#测试输入
#!usrinpython3
num = input('Please enter an num :')
print ("now Doubling your num %d" % (int(num)*2))
#字符串和切片
#!/usr/bin/python3
pystr = 'Python'
iscool = 'is cool'
print ('pystr[0] is %s.' % pystr[0])
print ('pystr[2:5] is %s'% pystr[2:5])
#!/usr/bin/python3
#if test
count = 1
if count > 1:
print ("test 1")
elif count == 1 :
print ("test 2")
#while loop test
while count < 3:
print("now count = %d" % count)
count += 1
#for loop test
print("I like to use internet for:")
for item in ['e-mail', 'net-surfing', 'homework']:
print(item,)
print()
#range test
for eachNum in [0,1,2]:
print(eachNum)
print('*'*4)
for eachNum in range(3):
print(eachNum)
print('test for string','*'*4)
foo = 'abs'
for s in foo:
print(s)
print('test of range and len')
for i in range(len(foo)):
print (foo[i],'%d'%i)
squared = [x**2 for x in range(4)]
for i in squared:
print(i)
#function test
def addMe2Me(x):
'apply + operation to argument'
return (x+x)
print(addMe2Me([2,'4']))
#default function param test
#!/usr/bin/python3
def foo(debug=True):
if debug:
print('cur in debug mode')
else:
print('cur in realse mode')
print('done')
foo(False)
#class test
#!/usr/bin/python3
class Myfoo(object):
version = 0.1
def __init__(self,nm='John Doe'):
self.name = nm
print('created a class instance for',nm)
print('this is a ','test')
def showname(self):
print('your name is ', self.name)
def showverison(self):
print( self.version)
foo = Myfoo()