Home Backend Development Python Tutorial python使用PyV8执行javascript代码示例分享

python使用PyV8执行javascript代码示例分享

Jun 16, 2016 am 08:46 AM
python

安装相应的库,我使用的是PyV8

需要注意的是里面写的function函数需要用()括起来

复制代码 代码如下:

import PyV8

class Test():

      def js(self):       

   ctxt = PyV8.JSContext()       

   ctxt.enter()              

   func = ctxt.eval('''(function(){return '###'})''')       

   print func()       

   print '213'

if __name__ == '__main__':

     crawler = Test()   

  crawler.js()   

输出的结果是:

复制代码 代码如下:

>>>
###
213
>>>

向js代码中传递参数的方法

复制代码 代码如下:

  func = ctxt.eval(''' (function(a){return encodeURIComponent(a)})''')
        print func(a)

a是需要传递的参数,encodeURIComponent是js中的一种编码方式

我遇到这个问题是在做爬虫的时候,进行post传值的过程中,一些中文字符被网站的js使用encodeURIComponent进行了编码导致不能提交可识别的代码,所以想到这个办法在python程序中进行编码,之后再传值,就可以很好的解决这个问题

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to solve the permissions problem encountered when viewing Python version in Linux terminal? How to solve the permissions problem encountered when viewing Python version in Linux terminal? Apr 01, 2025 pm 05:09 PM

Solution to permission issues when viewing Python version in Linux terminal When you try to view Python version in Linux terminal, enter python...

How to efficiently copy the entire column of one DataFrame into another DataFrame with different structures in Python? How to efficiently copy the entire column of one DataFrame into another DataFrame with different structures in Python? Apr 01, 2025 pm 11:15 PM

When using Python's pandas library, how to copy whole columns between two DataFrames with different structures is a common problem. Suppose we have two Dats...

Can Python parameter annotations use strings? Can Python parameter annotations use strings? Apr 01, 2025 pm 08:39 PM

Alternative usage of Python parameter annotations In Python programming, parameter annotations are a very useful function that can help developers better understand and use functions...

Python Cross-platform Desktop Application Development: Which GUI Library is the best for you? Python Cross-platform Desktop Application Development: Which GUI Library is the best for you? Apr 01, 2025 pm 05:24 PM

Choice of Python Cross-platform desktop application development library Many Python developers want to develop desktop applications that can run on both Windows and Linux systems...

How to dynamically create an object through a string and call its methods in Python? How to dynamically create an object through a string and call its methods in Python? Apr 01, 2025 pm 11:18 PM

In Python, how to dynamically create an object through a string and call its methods? This is a common programming requirement, especially if it needs to be configured or run...

How do Python scripts clear output to cursor position at a specific location? How do Python scripts clear output to cursor position at a specific location? Apr 01, 2025 pm 11:30 PM

How do Python scripts clear output to cursor position at a specific location? When writing Python scripts, it is common to clear the previous output to the cursor position...

Python hourglass graph drawing: How to avoid variable undefined errors? Python hourglass graph drawing: How to avoid variable undefined errors? Apr 01, 2025 pm 06:27 PM

Getting started with Python: Hourglass Graphic Drawing and Input Verification This article will solve the variable definition problem encountered by a Python novice in the hourglass Graphic Drawing Program. Code...

Why can't my code get the data returned by the API? How to solve this problem? Why can't my code get the data returned by the API? How to solve this problem? Apr 01, 2025 pm 08:09 PM

Why can't my code get the data returned by the API? In programming, we often encounter the problem of returning null values ​​when API calls, which is not only confusing...

See all articles