![]() ![]() 7 Now, running our script again should be successful. Venture back to Preferences → Variables and add a variable with the name $PATH and the value $PATH:/usr/local/bin. 6įortunately, we can assign our $PATH variable to be recognized in TextMate. It exports the dynamic, static, and project-dependent variables when a command is issued from within the editor, as needed. In other words, TextMate doesn’t have any idea what our $PATH variable is set to, because it doesn’t share environment variables with the shell. Although our $PATH variable is set, TextMate does not parse our shell scripts. ![]() #!/usr/bin/env python3 print ( 'hello, hypepat!' )ĭamn it. We can change it from /usr/local/bin/python3, the absolute path, to /usr/bin/env python3, the environment variable. So, lets backtrack a bit and re-examine that shebang line. Traditionally, the developer would use /usr/bin/env instead of an absolute path to specify the first interpreter found along the $PATH. This allows the developer to create specific environments with specific dependencies. 5 This way, when you run your scripts, they call the python that was installed through virtualenv. Virtual environments work by prefixing your $PATH shell variable with the location of a locally installed Python interpreter and library. And considering the vast majority of Python development is done in virtual environments, this is not an option. In most cases manually changing the value of TM_PYTHON is not the most elegant solution, as we are limiting ourselves to the use of only one interpreter. Now, go back and disable (uncheck) the static variable TM_PYTHON in Preferences → Variables, and lets try something perhaps a little more elegant. Rerun the script, and marvel at your command of a very powerful editor. ![]() Go ahead an enter /usr/local/bin/python3 for the “Value” of the variable. Now we can enter the absolute path to our python3 interpreter, as we did above with the shebang line. Hit the + and enter TM_PYTHON for the “Variable Name”. Static variables are assigned in Preferences → Variables. Instead, lets assign a value to TM_PYTHON. And to be honest, there is more Python 2 code than Python 3 code in the world, so that seems like a rash thing to do. We could update the "python" after the logical-or to "python3", but this single line is going to be executed for every script we run in the future. ![]() It appears there is a static variable, TM_PYTHON, that is either set to the OS X system interpreter, or isn’t set at all. Line #13 of that script actually calls the Python interpreter to run our script, and the code looks alot like the following: Now, if we were to do some digging into the internals of the Python bundle, 4 we will find a Ruby script that is called every time we run our code. Finally, Project dependent variables are defined by the user in their project configuration file, and exist only for snippets and commands executed in the context of that project. 3 Static variables are defined by the user in Preferences → Variables and give application-wide support to commands and snippets. Dynamic variables are defined by TextMate and provide the current configuration of the application. Rage Against the Defaultsįirst some background: TextMate uses environment variables to provide context to its various scripts and commands, including those in bundles. Surely TextMate provides a way to find the interpreter I want, on an application-wide basis. We shouldn’t have to rely on the shebang line to find the interpreter. don’t leave TextMate to find the terminalīut, this is not very pragmatic.#!/usr/local/bin/python3 print ( 'hello, hypepat!' )Įxcellent, it worked. Lets set up a simple script and test this: I have installed Python 3 using homebrew, so the binary is in my /usr/local/bin folder. If found, it will attempt to call that interpreter when you run your script. TextMate will parse the first line of your Python script for a shebang sequence. This is a problem because I have decided to forgo living in the past, and otherwise embrace the future that is Python 3. To get specific, this is version 2.7.10 on El Capitan. TextMate chooses to use the default installation of Python that ships with OS X. 1 But, alas, it’s “Run Script” command, invoked with ⌘R, refuses to cooperate with me. TextMate ships with a Python bundle, and it contains a multitude of already useful commands. No matter what language you prefer to spend your time writing, chances are, there exists a bundle that is feature-packed with the idioms, syntax, and completions of that language. The true dominance of TextMate lies in its bundles. Hypepat » Python in TextMate 2 hypepat by PAT GAFFNEY ![]()
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