自学教程：一小时快速入门Python教程

String cmd="cmd.exe ping ";String ipprefix="192.168.10."; int begin=101; int end=200;Process p=null; for(int i=begin;i<end;i++){     p= Runtime.getRuntime().exec(cmd+i);     String line = null;     BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));     while((line = reader.readLine()) != null)     {         //Handling line , may logs it.  }    reader.close();    p.destroy();}

 import subprocesscmd="cmd.exe" begin=101 end=200  while begin<end:    p=subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE,                   stdin=subprocess.PIPE,                   stderr=subprocess.PIPE)    p.stdin.write("ping 192.168.1."+str(begin)+"/n")    p.stdin.close()    p.wait()    print "execution result: %s"%p.stdout.read()

print "Hello,world!"

print "Hello,world!"raw_input("Press enter key to close this window! ");

print "欢迎来到奥运中国!" raw_input("Press enter key to close this window!");

# -*- coding: cp936 -*-print "欢迎来到奥运中国!" raw_input("Press enter key to close this window! ");

# -*- coding: GBK -*-print "欢迎来到奥运中国!" # 使用中文的例子 raw_input("Press enter key to close this window");

a=100.0 b=201.1 c=2343 print (a+b+c)/c 

print """ Usage: thingy [OPTIONS]     -h                        Display this usage message     -H hostname               Hostname to connect to """

word="abcdefg" a=word[2]print "a is: "+ab=word[1:3]print "b is: "+b # index 1 and 2 elements of word.c=word[:2]print "c is: "+c # index 0 and 1 elements of word.d=word[0:]print "d is: "+d # All elements of word.e=word[:2]+word[2:]print "e is: "+e # All elements of word.f=word[-1]print "f is: "+f # The last elements of word.g=word[-4:-2]print "g is: "+g # index 3 and 4 elements of word.h=word[-2:]print "h is: "+h # The last two elements.i=word[:-2]print "i is: "+i # Everything except the last two charactersl=len(word)print "Length of word is: "+ str(l)

print "Input your Chinese name:" s=raw_input("Press enter to be continued ");print "Your name is  : " +s;l=len(s)print "Length of your Chinese name in asc codes is:"+str(l);a=unicode(s,"GBK")l=len(a)print "I'm sorry we should use unicode char!Characters number of your Chinese /  name in unicode is:"+str(l);

word=['a','b','c','d','e','f','g']a=word[2]print "a is: "+ab=word[1:3]print "b is: " print b # index1 and 2 elements of word.c=word[:2]print "c is: " print c # index0 and 1 elements of word.d=word[0:]print "d is: " print d # All elements of word.e=word[:2]+word[2:]print "e is: " print e # All elements of word.f=word[-1]print "f is: " print f # The last elements of word.g=word[-4:-2]print "g is: " print g # index3 and 4 elements of word.h=word[-2:]print "h is: " print h # The last two elements.i=word[:-2]print "i is: " print i # Everything except the last two charactersl=len(word)print "Length of word is: "+ str(l)print "Adds new element[图片上传中...(image-b4ced-1616074265420-0)] " word.append('h')print word

# Multi-way decisionx=int(raw_input("Please enter an integer:")) if x<0:    x=0 print"Negative changed to zero" elif x==0:    print "Zero"  else:    print "More" # Loops Lista= ['cat', 'window', 'defenestrate'] for x ina:    print x, len(x) 

# Define and invoke function.def sum(a,b):    return a+bfunc = sumr = func(5,6)print r# Defines function with default argumentdef add(a,b=2):    return a+br=add(1)print rr=add(1,5)print r

# The range() functiona =range(5,10)print aa = range(-2,-7)print aa = range(-7,-2)print aa = range(-2,-11,-3) # The 3rd parameter stands for stepprint a

spath="D:/download/baa.txt" f=open(spath,"w") # Opens file for writing.Creates this file doesn't exist.  f.write("First line 1./n")f.writelines("First line 2.")f.close()f=open(spath,"r") # Opens file forreading for line in f:    print linef.close()

s=raw_input("Input your age:") if s =="":    raise Exception("Input must no be empty.") try:    i=int(s)except ValueError:    print "Could not convert data to an integer." except:    print"Unknown exception!"  else: # It is useful for code that must be executed if the try clause does not raise an exception    print "You are %d" % i," years old"  finally: # Clean up action    print "Goodbye!"

class Base:    def __init__(self):        self.data =[]    def add(self, x):        self.data.append(x)    def addtwice(self, x):        self.add(x)        self.add(x)# Child extends Base class Child(Base):    def plus(self,a,b):        return a+boChild =Child()oChild.add("str1")print oChild.dataprint oChild.plus(2,3)

# a.pydef add_func(a,b):    return a+b

# b.pyfrom a import add_func # Also can be : import aprint "Import add_func from module a" print"Result of 1 plus 2 is: " print add_func(1,2)    # If using "import a" , then here should be "a.add_func"

import sysprint sys.path

import syssys.path.append('D://download')from parent.child.a import add_funcprint sys.pathprint "Import add_func from module a" print"Result of 1 plus 2 is: " print add_func(1,2)