Python (v)

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Array

Arrays Store A string of information of the same type

List

First, definition of a list

? Define an empty list

list = []

? Defines a list that contains elements that can be any type , including numeric types , lists , tuples , such as strings , etc. can be.

How to assign a value Definition:

List = ["Fentiao", 4, ' gender ')

List1 = [' Fentiao ', (4, ' Male ')]

Factory Functions Definition:

n = list ("Hello")

In [2]: n=list ("Hello")

In [3]: print n

[' H ', ' e ', ' l ', ' l ', ' O ']

Second, support indexing, slicing, splicing, repeating, member operators

indexes, slices:

In [4]: li=[1,1.0,true, ' hello ', 1+4j,[1,2, ' hello ']

In [5]: li[0]

OUT[5]: 1

In [6]: li[-1]

OUT[6]: [1, 2, ' hello ']

In [7]: li[:]

OUT[7]: [1, 1.0, True, ' Hello ', (1+4j), [1, 2, ' hello ']]

In [8]: li[1:]

OUT[8]: [1.0, True, ' Hello ', (1+4j), [1, 2, ' hello ']]

In [9]: li[0:2]

out[9]: [1, 1.0]

In [ten]: li[::-1]

out[]: [[1, 2, ' Hello '], (1+4j), ' Hello ', True, 1.0, 1]

Stitching:

In []: li1=[' vsftpd ', ' Apache ']

in [+]: li2=[' mariadb ', ' NFS ']

In []: Li1 + li2

OUT[20]: [' vsftpd ', ' Apache ', ' mariadb ', ' NFS ']

Repeat:

in [+]: li1=[' vsftpd ', ' Apache ']

In []: li1*2

OUT[22]: [' vsftpd ', ' Apache ', ' vsftpd ', ' Apache ']

Member operators:

In [23°c]: li1=[' vsftpd ', ' Apache ']

in [+]: ' vsftpd ' in Li1

OUT[24]: True

in [+]: ' vsftpd ' not in Li1

OUT[25]: False

Topic 1:

View the 21,22,3306,80,69 Port of the 1-10 host

Answer:

#!/usr/bin/env python
# Coding:utf-8
ports = [21,22,3306,80,69]
For i in range (1,11):
For port in ports:   # Each element in the list can be traversed by the for i in list
IP = ' 172.25.254. ' +str (i)
print "[+] Listening on:%s:%d"% (ip,port)

Three, the common method of the list

1. Update the list

Append ( add an element )

Extend ( You can add multiple elements , you can give a list in parentheses, and the elements in the list are poured into the original list and become his element )

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Python (v)