Pydev Python 3

9,800 downloadsUpdated: April 11, 2021Donationware
  • I'm experiencing problem with the PyDev Eclipse plugin. I have Python3.3, pip, Eclipse Juno, PyDev plugin installed on a Linux machine. I have installed Django 1.5.4 through pip. Now I am trying to.
  • Certain advanced features such as code analysis, quick-fixes, and remote debugging were reserved for the non-free version. On September 3, 2009, Aptana announced PyDev version 1.5, a combined version of PyDev and PyDev Extensions, all available under the Eclipse Public License.

Powerful, accessible and reliable Eclipse plugin that enables developers to produce the applications they want in no time at all

The command (base) [email protected]:$ python works perfectly and gives what I expect. What is bothering is during the edition of the code in Eclipse. While the following line is acceptable and compiled well with Python 3.7 a,b,c =.funcreturns2things,funcreturns1thing. PyDev is a Python Development Environment (Python IDE plugin for Eclipse). It features an editor with code completion, code analysis, PyDev for Eclipse - Browse /pydev/PyDev 6.3.2 at

What's new in PyDev 8.3.0:

  • Java 11 is now required to run PyDev.
  • External linters:
  • Configurations of the linters can be saved to the project or user settings (#PyDev-1139)
Read the full changelog

Working as a software developer can be a challenging, tedious activity, as it frequently involves generating, editing and processing numerous lines of code.

Fortunately, nowadays you can turn to various tools that can help you simplify your work, such as PyDev.

Please note that this application requires Java, Eclipse and Python installed on your computer so that it can run properly.

Easily integrated

You can access PyDev's functions with minimum difficulty since installing it on your system can be easily accomplished. You just need to decompress the contents of the archive file in the root directory of Eclipse.

After doing so, you need to configure the interpreter on your computer by accessing the Interpreter option under the PyDev section. You can choose to configure it manually, which provides you with more control over the process, but it is also possible to choose an automatic configuration, for quicker results.

Quickly create projects

PyDev enables you to create Python projects directly from within the application, in a quick, efficient manner. This can be done by typing a name in the dedicated field, specifying the destination path, selecting the project type and choosing the desired interpreter from the list.

It is also possible to generate projects from existing sources, if needed, by using the Import function under the Files menu.

Handy Python IDE

This reliable component provides you with a wide variety of features that can help you develop your applications in an intuitive manner.

It integrates with Python, Jython and IronPython, features syntax highlighting and packs wizard-like menus for several of its functions such as creating a new project and managing modules.


To wrap it up, PyDev is a lightweight, yet reliable Python IDE that comes as an Eclipse plugin and helps you simplify your work as a software developer by providing you with several functions. It can be easily integrated into the host application, thus proving itself to be highly accessible.

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PyDev was reviewed by Vlad Constantinescu
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PyDev 8.3.0

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runs on:
Windows 10 32/64 bit
Windows 8 32/64 bit
Windows 7 32/64 bit
Windows Vista 32/64 bit
Windows XP 32/64 bit
file size:
26 MB
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After installing it, the first thing you must do is configure the Python and/or Jython and/or IronPython interpreter.
To configure the interpreter:

1. Go to: window > preferences > PyDev > Interpreter - (Python/Jython/IronPython).

2. Choose the interpreter you have installed in your computer (such as python.exe, jython.jar or ipy.exe).

Note that the Auto Config will try to find it in your PATH, but it can fail if it's not there (or if you want to configure a different interpreter).

On Windows it'll also search the registry and provide a choice based on the multiple interpreters available in your computer (searching in the registry).

On Linux/Mac, usually you can do a 'which python' to know where the python executable is located.

On Mac it's usually at some place resembling the image below (so, if you want to configure a different version of the interpreter manually, that's where you'd want to search):

3. Select the paths that will be in your SYSTEM PYTHONPATH.

IMPORTANT: Select only folders that will NOT be used as source folders for any project of yours (those should be later configured as source folders in the project).

IMPORTANT for Mac users: The Python version that usually ships with Mac doesn't seem to have the .py source filesavailable, which are required for PyDev, so, using a different interpreter is recommended (i.e.: Download it from If you don't want to use a different interpreter, get the source files for the Python /Lib folderand add those to the system installation.

After those steps, you should have a screen as presented below:

The System libs must contain at least the Lib and the Lib/site-packages directory.

Pydev Python 3.7

The Forced builtin libs must contain the modules built into the interpreter (and others whose
analysis should be done dynamically. See: Forced Builtins).

For PyDev, a virtual environment works as any other regular Python executable, so, just click the New..button and select the Python executable in the virtual environment -- just take care to double check the folders which are selectedwhen the virtual environment executable is used to make sure that you leave checked the /Lib folder from the base interpreter if the virtual environmentinherits the PYTHONPATH from a base installation).

venv is the recommended way of managing virtual environments starting from Python 3.5. By default, venv will only symlinks to Python interpreter, and thiswill cause the pip of the created virtual environments in Pydev showing all system installed site-packages. To get it displayed correctly, you will need to append '--copies' to the 'python3 -m venv /path/to/venv'

The most common error is having a problem in the environment variables used from the shell that spawned Eclipse, in a way that for some reason when getting the variables of one interpreter, it gathers the info from another interpreter (thus mixing the interpreter and the actual libraries).

Usually running (from the command prompt) the file that gives that info for PyDev can help you discovering the problem in your configuration (

That file is usually located at: eclipsepluginsorg.python.pydev_$version$, but it can be at other location depending on how you installed it )

In Python: python.exe

In Jython: java.exe -cp c:pathtojython.jar org.python.util.jython

Pydev Python 3.0

In IronPython: ipy.exe

If you're unable to find out what's going on, please open an issue in the tracker ( (giving the output obtained from executing in your machine).

Since PyDev 3.0, such modifications should be automatically detected by PyDev and require no further steps (so, if you pip-installed something or manually added it to a folder which is already in the PYTHONPATH -- such as Lib/site-packages -- just wait a bit and PyDev should start considering it in code-analysis and code-completion).

The System libs are the libraries that will be added to the PYTHONPATH of any project that is using this interpreter.

For Python and IronPython, it's composed of folders, zip files and egg files. Note that if dlls should be added to the PYTHONPATH, the folders actually containing those dlls should be added, and they must have the same name to be imported in the code (the case is important). I.e.: if you want to import myDllModule, it must be called myDllModule.dll (note that .pyd and .so extensions are also accepted).

Pydev Eclipse Download

For Jython, it's composed of folders and jars.

The Forced builtin libs are the libraries that are built-in the interpreter, such as _builtin_, sha, etc or libraries that should forcefully analyzed through a shell (i.e.: to analyze modules in this list, PyDev will spawn a shell and do a dir() on the module to get the available tokens for completions and code-analysis) – still, sometimes even that is not always possible, in which case, Predefined Completions may be used to let PyDev know about the structure of the code.

For Python, you should have around 50 entries

For Jython around 30 entries.

For IronPython more than 100 entries. All the packages built into .NET should be included here – e.g.: Microsoft, Microsoft.Windows.Themes, System, System.IO, etc.

Additionally, you may add other libraries that you want to treat as builtins, such as os, wxPython, OpenGL, etc. This is very important, because PyDev works on the java side only with static information, but some modules don't have much information when analyzed statically, so, PyDev must create a shell to get information on those. Another important thing is that they must be on your System PYTHONPATH (otherwise, the shell will be unable to get that information).

Predefined completions are completions acquired from sources that provide only the interfaces for a given Python module (with Python 3.0 syntax).

A predefined completion module may be created by having a module with the extension .pypredef with regular Python 3.0 contents, but with attributes having assigns to its type and methods having as the body a sole return statement – and the docstring may have anything.

Example for a my.source.module (must be declared in a my.source.module.pypredef file):

Note 1: the name of the file is the exact name of the module

Note 2: .pypredef files are not searched in subfolders

Optionally a QScintilla .api file may be added. When this is done, PyDev will try to create .pypredef files from that .api file and will add the folder containing those to the PYTHONPATH. Note that this conversion is still in beta and the file may not be correctly generated, so, keep an eye for errors logged when a code-completion that would use those modules (while it will not fail, those completions won't be shown using the .pypredef files). In those situations, please create a bug-report with the .api file that generated incorrect code.

The variables defined at the environment will be set as environment variables when running a script that uses the given interpreter (note that it can still be overridden in the run configuration)

Strings defined here may be used in:

  • project configuration for source folders and external libraries
  • launch configuration for the main module

They can be used in those places in the format: ${DECLARED_VARIABLE}

Kalau anda kesulitan dalam menggunakan mysql dalam XAMPP via command prompt (Windows OS based), coba ikuti langkah berikut ini. Pastikan MySQL sudah anda jalankan melalui XAMPP Control Panel (shortcut sudah ada di menu Program Files/All Program. Kalau port dari MySQL sudah muncul (default: 3306) maka MySQL sudah jalan, kalau belum muncul Anda klik tombol. You can access the MySQL command line with XAMPP for Windows. Click XAMPP icon to launch its cPanel. Click on Shell button. Type this mysql -h localhost -u root and click enter; You should see all the command lines and what they do. Setting environment for using XAMPP for Windows. Mysql xampp cmd Steps To Create MySQL Database Using XAMPP STEP 1- Navigate to XAMPP in your system or simply launch it by clicking the XAMPP Icon. The Control Panel is now visible and can be used to initiate or halt the working of any module. STEP 2- Click on the 'Start' button corresponding to Apache and MySQL.

PyDev currently has no support for cygwin. Currently you'll be able to configure the interpreter with cygwin, but there are still other related problems (mostly on converting between windows and cygwin paths as needed).