Make sure that python3 is installed. Depending on the default python version of your distribution you might need to install the python package or the python3 package.
For Ubuntu 18.04: apt-get install python3
You can check the python version with -V
. Try python -V
or python3 -V
.
Furthermore, we need the python package ply
that provides a lexer. You can
install it via your package manager or via pip
.
-
On Ubuntu:
apt-get install python3-ply
-
Via pip:
pip3 install --user ply
Download and install python3. Recommended way is to use Homebrew as a package manager for Mac.
-
Install XCode (or XCode Developer Tooling):
xcode-select --install
-
Install Homebrew:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)
-
Install Python3:
brew install python3
-
Install pip:
brew install pip3
-
After the installer completed open a new terminal and install
ply
with the following command:pip3 install --user ply
Download and install python3 (https://www.python.org/ftp/python/3.7.3/python-3.7.3.exe). Make sure to add python to the PATH when the installer asks.
After the installer completed, open a command line to install ply with the
following command: pip install --user ply
To run the compiler, open a command line and navigate to the parent directory
of the directory containing this file. You can pass a programm to the compiler
using the echo
command and the pipe operaor:
echo "(2+3)*5" | python -m <package>.main
Thereby, <package>
is a placeholder for the directory that contains the main
module that you want to execute. In the first tutorial, this will be
ll_parser.main
. For instance:
cd <path/to/this/directory>
cd ..
echo "3*9" | python -m ll_parser.main
Depending on your distribution, you might need to run python3
instead of
python
.