4.8 KiB
Installation guide
Installing Scrapy
Note
Check :ref:`intro-install-platform-notes` first.
System Message: ERROR/3 (<stdin>, line 10); backlink
Unknown interpreted text role "ref".The installation steps assume that you have the following things installed:
- Python 2.7
- pip and setuptools Python packages. Nowadays pip requires and installs setuptools if not installed.
- lxml. Most Linux distributions ships prepackaged versions of lxml. Otherwise refer to http://lxml.de/installation.html
- OpenSSL. This comes preinstalled in all operating systems, except Windows where the Python installer ships it bundled.
You can install Scrapy using pip (which is the canonical way to install Python packages).
To install using pip:
pip install Scrapy
Platform specific installation notes
Windows
Install Python 2.7 from https://www.python.org/downloads/
You need to adjust PATH environment variable to include paths to the Python executable and additional scripts. The following paths need to be added to PATH:
C:\Python27\;C:\Python27\Scripts\;
To update the PATH open a Command prompt and run:
c:\python27\python.exe c:\python27\tools\scripts\win_add2path.py
Close the command prompt window and reopen it so changes take effect, run the following command and check it shows the expected Python version:
python --version
Install pywin32 from http://sourceforge.net/projects/pywin32/
Be sure you download the architecture (win32 or amd64) that matches your system
Install pip from https://pip.pypa.io/en/latest/installing.html
Now open a Command prompt to check pip is installed correctly:
pip --version
At this point Python 2.7 and pip package manager must be working, let's install Scrapy:
pip install Scrapy
Ubuntu 9.10 or above
Don't use the python-scrapy package provided by Ubuntu, they are typically too old and slow to catch up with latest Scrapy.
Instead, use the official :ref:`Ubuntu Packages <topics-ubuntu>`, which already solve all dependencies for you and are continuously updated with the latest bug fixes.
System Message: ERROR/3 (<stdin>, line 78); backlink
Unknown interpreted text role "ref".Archlinux
You can follow the generic instructions or install Scrapy from AUR Scrapy package:
yaourt -S scrapy
Mac OS X
Building Scrapy's dependencies requires the presence of a C compiler and development headers. On OS X this is typically provided by Apple’s Xcode development tools. To install the Xcode command line tools open a terminal window and run:
xcode-select --install
There's a known issue that prevents pip from updating system packages. This has to be addressed to successfully install Scrapy and its dependencies. Here are some proposed solutions:
(Recommended) Don't use system python, install a new, updated version that doesn't conflict with the rest of your system. Here's how to do it using the homebrew package manager:
Install homebrew:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Update your PATH variable to state that homebrew packages should be used before system packages (Change .bashrc to .zshrc accordantly if you're using zsh as default shell):
echo "export PATH=/usr/local/bin:/usr/local/sbin:$PATH" >> ~/.bashrc
Reload .bashrc to ensure the changes have taken place:
source ~/.bashrc
Install python:
brew install python
Latest versions of python have pip bundled with them so you won't need to install it separately. If this is not the case, upgrade python:
brew update; brew upgrade python
(Alternative) Force system python to load the user installed packages first:
Update your PYTHONPATH variable (Change .bashrc to .zshrc accordantly if you're using zsh as default shell):
echo "export PYTHONPATH=/Library/Python/2.7/site-packages:$PYTHONPATH" >> ~/.bashrc
Reload .bashrc to ensure the changes have taken place:
source ~/.bashrc
Install pip:
sudo easy_install pip
After any of these workarounds you should be able to install Scrapy:
pip install Scrapy