{"id":14,"date":"2020-02-16T10:16:10","date_gmt":"2020-02-16T10:16:10","guid":{"rendered":"https:\/\/lansdown-geophysics.co.uk\/?page_id=14"},"modified":"2020-02-29T20:34:28","modified_gmt":"2020-02-29T20:34:28","slug":"python","status":"publish","type":"page","link":"https:\/\/lansdown-geophysics.co.uk\/index.php\/python\/","title":{"rendered":"Python"},"content":{"rendered":"\n

Python<\/h1>\n\n\n\n

If you want to use the open source SEGY libraries such as segyio<\/a>, segypy<\/a>, or segpy<\/a> then I would recommend that you install Python 3.6.1 as all these libraries are compatible with this version. By using these libraries managing SEGY files with Python becomes incredibly easy. Pretty much all the functionality that is available is SEGY tools such as Seismic Unix<\/a> can now be available simply by writing a Python script and importing the relevant modules.<\/p>\n\n\n\n

Many people have a natural concern about using Python because in order to use Python scripts Python needs to be installed on their machine. As most of the people I work with use Windows this concern can be legitimate particularly if administrator privileges are required (IT departments tend not to understand Python and how it works).<\/p>\n\n\n\n

By far the easiest way to install Python on Windows is to do it for the currently installed user. This requires no administrative privileges and also means that any libraries that are subsequently required can be installed with a few keys strokes in the command window.<\/p>\n\n\n\n

To install Python on Windows, download Python 3.6.1 from here<\/a> and select the Windows x86-64 executable installer<\/a>, <\/p>\n\n\n\n

Installing Python<\/h2>\n\n\n\n
\"\"
Run the Python 3.6.1 installer <\/figcaption><\/figure><\/div>\n\n\n\n

Run the Python 3.6.1 installer. Use the default settings and ensure that the “Add Python 3,6 to PATH”<\/em> checkbox is checked. Then click on the “Install Now” <\/em>link in the upper part of the window. <\/p>\n\n\n\n

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Successful Confirmation <\/figcaption><\/figure><\/div>\n\n\n\n

If all goes well then Python 3.6.1 will be installed in the following path:<\/p>\n\n\n\n

C:\\Users\\”Your user name”\\AppData\\Local\\Programs\\Python\\Python36<\/p>\n\n\n\n

\"\"
Open a command prompt and type python <\/figcaption><\/figure><\/div>\n\n\n\n

Open a command prompt and type python, You should get a python shell that looks something like this: <\/p>\n\n\n\n

Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 18:41:36) [MSC v.1900 64 bit (AMD64)] on win32\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\n>>><\/code><\/pre>\n\n\n\n
\nType Ctrl+Z and and hit return, you will exit the shell.\n\n<\/p>\n\n\n\n
Installing Libraries<\/h2>\n\n\n\n
\nNow that Python is installed you can install any libraries that you may need from the command line.  To install the Gooey<\/a> argument parser (GUI front end) type the following:\n\n<\/p>\n\n\n\n
pip install Gooey<\/code><\/pre>\n\n\n\n
This will try to install the Gooey front end argument parser.  The following output to the console is typical: <\/p>\n\n\n\n
Collecting Gooey\n  Using cached https:\/\/files.pythonhosted.org\/packages\/37\/2a\/f173ab639dd06531c7e3082011adeb77c876fb7095ca94f08956dd3daf79\/Gooey-1.0.2-py2.py3-none-any.whl\nRequirement already satisfied: Pillow>=4.3.0 in c:\\users\\angus\\appdata\\local\\programs\\python\\python36\\lib\\site-packages (from Gooey) (5.4.1)\nRequirement already satisfied: psutil>=5.4.2 in c:\\users\\angus\\appdata\\local\\programs\\python\\python36\\lib\\site-packages (from Gooey) (5.6.1)\nRequirement already satisfied: wxpython>=4.0.0b1 in c:\\users\\angus\\appdata\\local\\programs\\python\\python36\\lib\\site-packages (from Gooey) (4.0.4)\nRequirement already satisfied: six in c:\\users\\angus\\appdata\\local\\programs\\python\\python36\\lib\\site-packages (from wxpython>=4.0.0b1->Gooey) (1.12.0)\nInstalling collected packages: Gooey\nSuccessfully installed Gooey-1.0.2<\/code><\/pre>\n\n\n\n
\nTo install other libraries or modules the syntax is similar:\n\n<\/p>\n\n\n\n
pip install \"the library you want to install\"<\/code><\/pre>\n\n\n\n
Segyio<\/a><\/h2>\n\n\n\n
Segyio is a small LGPL licensed C library for easy interaction with SEG Y formatted seismic data, with language bindings for Python and Matlab. Segyio is an attempt to create an easy-to-use, embeddable, community-oriented library for seismic applications.<\/p>\n\n\n\n
Feature summary<\/p>\n\n\n\n