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Your First Program in Python 2 on Mac OS X. This page tells you how to setup a Python programming environment for your Mac OS X computer and provides a step-by-step guide for creating and running a simple 'Hello, world' Python program. Exercise 13: Stream a File (cat) You're going to do some more setup for this one so you get used to making files in one program and then accessing them from the command line. With the same text editor from the last exercise, create another file named test2.txt but this time save it directly to your temp directory.

Showing an image from console in Python. Or simply execute the image through the shell, as in. Calling an external command in Python. When called with -m module-name, the given module is located on the Python module path and executed as a script. In non-interactive mode, the entire input is parsed before it is executed. Pip is the preferred installer program. Starting with Python 3.4, it is included by default with the Python binary installers. A virtual environment is a semi-isolated Python environment that allows packages to be installed for use by a particular application, rather than being installed system wide.

Interface options The interpreter interface resembles that of the UNIX shell, but provides some additional methods of invocation: • When called with standard input connected to a tty device, it prompts for commands and executes them until an EOF (an end-of-file character, you can produce that with Ctrl-D on UNIX or Ctrl-Z, Enter on Windows) is read. • When called with a file name argument or with a file as standard input, it reads and executes a script from that file. • When called with a directory name argument, it reads and executes an appropriately named script from that directory. • When called with -c command, it executes the Python statement(s) given as command. Here command may contain multiple statements separated by newlines.

Leading whitespace is significant in Python statements! • When called with -m module-name, the given module is located on the Python module path and executed as a script. In non-interactive mode, the entire input is parsed before it is executed. An interface option terminates the list of options consumed by the interpreter, all consecutive arguments will end up in – note that the first element, subscript zero ( sys.argv[0]), is a string reflecting the program’s source. -c Execute the Python code in command. Command can be one or more statements separated by newlines, with significant leading whitespace as in normal module code. If this option is given, the first element of will be '-c' and the current directory will be added to the start of (allowing modules in that directory to be imported as top level modules).

-m Search for the named module and execute its contents as the module. Since the argument is a module name, you must not give a file extension (.py). The module-name should be a valid Python module name, but the implementation may not always enforce this (e.g. It may allow you to use a name that includes a hyphen).

Package names are also permitted. When a package name is supplied instead of a normal module, the interpreter will execute.__main__ as the main module. This behaviour is deliberately similar to the handling of directories and zipfiles that are passed to the interpreter as the script argument. Note This option cannot be used with built-in modules and extension modules written in C, since they do not have Python module files.

Sandisk cruzer usb driver download. However, it can still be used for precompiled modules, even if the original source file is not available. If this option is given, the first element of will be the full path to the module file (while the module file is being located, the first element will be set to '-m').

As with the option, the current directory will be added to the start of. Many standard library modules contain code that is invoked on their execution as a script. An example is the module. Changed in version 3.1: Supply the package name to run a __main__ submodule. - Read commands from standard input (). If standard input is a terminal, is implied. If this option is given, the first element of will be '-' and the current directory will be added to the start of. Install adobe reader 9 for mac.

Miscellaneous options -b Issue a warning when comparing str and bytes. Issue an error when the option is given twice ( -bb). Disable censor in read write gold 3 for mac. -B If given, Python won’t try to write.pyc or.pyo files on the import of source modules. -d Turn on parser debugging output (for wizards only, depending on compilation options). -E Ignore all PYTHON* environment variables, e.g.