from sys import argvscript, first, second, third = argvprint("The script is called:",script)
print("Your first variable is:",first)
print("Your second variable is:",second)
print("Your third variable is:",third)#运行power shell
#cd E:\py        #似乎是只能进到一级文件夹
#python 13.py first 2nd 3rd

 1 from sys import argv
 2
 3 script,user_name = argv
 4 prompt = '> '
 5
 6 print("Hi %s ,I'm the %s script." % (user_name,script))
 7 print("I'd like to ask you a few questions.")
 8 print("Do you like me %s?" % user_name)
 9 likes = input(prompt)
10
11 print("Where do you live %s?" % user_name)
12 lives = input(prompt)
13
14 print("What kind computer do you have?")
15 computer = input(prompt)
16
17 print("""
18 Alright, so you said %s about liking me.
19 You live in %s. Not sure where what is.
20 And you have a %s computer.Nice.
21 """ % (likes, lives, computer))

 1 from sys import argv
 2
 3 script, filename = argv
 4
 5 txt = open(filename)
 6
 7 print("Here's your file %r:" % filename)
 8 print(txt.read())
 9
10 print("Type the filename again:")
11 file_again = input("> ")
12 txt_again = open(file_again)
13
14 print(txt_again.read())

 1 from sys import argv
 2
 3 script, filename = argv
 4
 5 print("We are going to erase %r." % filename)
 6 print("If you don't want that, hit CTRL-C(^C).")
 7 print("If you do want that, hit RETURN.")
 8
 9 input("?")
10
11 print("Opening the file...")
12 target = open(filename, 'w')#以写模式打开文件，其实会新建一个文件，若原来有，则会被这个覆盖
13
14 print("Truncating the file. Goodbye!")
15 target.truncate()
16
17 print("Now I'm going to ask you for three lines.")
18
19 line1 = input("line 1：")
20 line2 = input("line 2: ")
21 line3 = input("line 3: ")
22
23 print("I'm going to write these to the file.")
24
25 target.write(line1)
26 target.write("\n")
27 target.write(line2)
28 target.write("\n")
29 target.write(line3)
30 target.write("\n")   #用一行写出来：
31 #target.write(line1+"\n"+line2+'\n'+line3)

32 print("And finally, we close it.") 33 target.close()

 1 from sys import argv
 2 from os.path import exists
 3
 4 script, from_file, to_file = argv
 5
 6 print("Copying from %s to %s" % (from_file, to_file))
 7
 8 #we could do these two on one line too, how?
 9 input1 = open(from_file)
10 indata = input1.read()
11
12 print("Does the output file exist? %r" % exists(to_file))
13 print("Ready,hit RETURN to continue, CTRL-C to abort.")
14 input()
15
16 output = open(to_file,'w')
17 output.write(indata)
18
19 print("Alright, all done.")
20
21 output.close()
22 input1.close()

 1 #this one is like your script with argv
 2 def print_two(*args):
 3     arg1, arg2 = args
 4     print("arg1: %r, arg2: %r" % (arg1, arg2))
 5
 6 #ok, that *args is actually pointless, we can just do this
 7 def print_two_again(arg1, arg2):
 8     print("arg1: %r, arg2: %r" % (arg1,arg2))
 9
10 #this just takes one argument
11 def print_one(arg1):
12     print("arg1: %r" % arg1)
13
14 #this takes no arguments
15 def print_none():
16     print("I got nothin'.")
17
18
19 print_two("Zed","Shaw")
20 print_two_again("MI","YO")
21 print_one("only one")
22 print_none()
23
24 def print_three(a,b,c):
25     print("%s %r %r" % (a, b, c))
26 print_three("a",'b','c')