Windows search python files

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• Difficulty Level : Easy
• Last Updated : 22 Nov, 2020

There may be many instances when you want to search a system.Suppose while writing an mp3 player you may want to have all the ‘.mp3’ files present. Well here’s how to do it in a simple way.
This code searches all the folders in the file it’s being run. If you want some other kinds of files just change the extension.

os is not an external ibrary in python. So I feel this is the simplest and the best way to do this.

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Как пути поиска Python используются в Visual Studio How Visual Studio uses Python search paths

При стандартном использовании Python переменная среды PYTHONPATH (или IRONPYTHONPATH и т. д.) предоставляет путь поиска по умолчанию для файлов модулей. With typical Python usage, the PYTHONPATH environment variable (or IRONPYTHONPATH , etc.) provides the default search path for module files. То есть, когда вы используете инструкцию from import. или import , в Python выполняется поиск совпадающего имени в следующих расположениях в указанном порядке: That is, when you use an from import. or import statement, Python searches the following locations in order for a matching name:

1. Встроенные модули Python. Python’s built-in modules.
2. Папка с кодом Python, который вы используете. The folder containing the Python code you’re running.
3. Расположение по пути поиска модуля, определенное в переменной среды. The «module search path» as defined by the applicable environment variable. (См. сведения в разделах о пути поиска модуля и переменных среды в основной документации Python.) (See The Module Search Path and Environment variables in the core Python documentation.)

Тем не менее Visual Studio игнорирует переменную среды для пути поиска, даже если она задана для всей системы. Visual Studio ignores the search path environment variable, however, even when the variable is set for the entire system. На самом деле она не учитывается именно из-за того, что задана для всей системы, так как в этом случае возникают некоторые вопросы, на которые нельзя ответить автоматически: для какого окружения предназначены указанные модули — для Python 2.7 или Python 3.6+? It’s ignored, in fact, precisely because it’s set for the entire system and thus raises certain questions that cannot be answered automatically: Are the referenced modules meant for Python 2.7 or Python 3.6+? нужно ли переопределять стандартные модули библиотеки Are they going to override standard library modules? и знает ли разработчик о подобном поведении или это попытка атаки. Is the developer aware of this behavior or is it a malicious hijacking attempt?

Таким образом, в Visual Studio можно напрямую указать пути поиска как в окружениях, так и в проектах. Visual Studio thus provides a means to specify search paths directly in both environments and projects. Код, который выполняется или отлаживается в Visual Studio, получает пути поиска из переменной PYTHONPATH (и других ее аналогов). Code that you run or debug in Visual Studio receives search paths in the value of PYTHONPATH (and other equivalent variables). Если вы добавляете пути поиска, Visual Studio проверяет библиотеки в этих расположениях и при необходимости создает для них базы данных IntelliSense (Visual Studio 2017 версии 15.5 и более ранних версий; это может занять некоторое время в зависимости от числа библиотек). By adding search paths, Visual Studio inspects the libraries in those locations and builds IntelliSense databases for them when needed (Visual Studio 2017 version 15.5 and earlier; constructing the database may take some time depending on the number of libraries).

Чтобы добавить путь поиска, в Обозревателе решений разверните узел проекта, щелкните правой кнопкой мыши элемент Пути поиска и выберите Добавить папку в путь поиска… To add a search path, go to Solution Explorer, expand your project node, right-click on Search Paths, and select Add Folder to Search Path:

Эта команда отображает браузер, в котором можно выбрать включаемую папку. This command displays a browser in which you then select the folder to include.

Если ваша переменная среды PYTHONPATH уже включает в себя требуемые папки, для ускорения процесса используйте команду Добавить PYTHONPATH в путь поиска. If your PYTHONPATH environment variable already includes the folder(s) you want, use the Add PYTHONPATH to Search Paths as a convenient shortcut.

После добавления папок в пути поиска Visual Studio использует эти пути для любой среды, связанной с проектом. Once folders are added to the search paths, Visual Studio uses those paths for any environment associated with the project. (Если окружение создано на основе Python 3, может произойти ошибка при попытке добавить путь поиска для модулей Python 2.7.) (You may see errors if the environment is based on Python 3 and you attempt to add a search path to Python 2.7 modules.)

Файлы с расширением ZIP или EGG также можно добавить в качестве путей поиска. Для этого нужно выбрать Добавить ZIP-архив в путь поиска. Files with a .zip or .egg extension can also be added as search paths by selecting Add Zip Archive to Search Path command. Как и при использовании папок, содержимое этих файлов проверяется и предоставляется для IntelliSense. As with folders, the contents of these files are scanned and made available to IntelliSense.

Find a file in python

I have a file that may be in a different place on each user’s machine. Is there a way to implement a search for the file? A way that I can pass the file’s name and the directory tree to search in?

9 Answers 9

os.walk is the answer, this will find the first match:

And this will find all matches:

And this will match a pattern:

I used a version of os.walk and on a larger directory got times around 3.5 sec. I tried two random solutions with no great improvement, then just did:

While it’s POSIX-only, I got 0.25 sec.

From this, I believe it’s entirely possible to optimise whole searching a lot in a platform-independent way, but this is where I stopped the research.

In Python 3.4 or newer you can use pathlib to do recursive globbing:

In Python 3.5 or newer you can also do recursive globbing like this:

If you are using Python on Ubuntu and you only want it to work on Ubuntu a substantially faster way is the use the terminal’s locate program like this.

search_results is a list of the absolute file paths. This is 10,000’s of times faster than the methods above and for one search I’ve done it was

72,000 times faster.

For fast, OS-independent search, use scandir

If you are working with Python 2 you have a problem with infinite recursion on windows caused by self-referring symlinks.

This script will avoid following those. Note that this is windows-specific!

It returns a list with all paths that point to files in the filenames list. Usage:

Below we use a boolean «first» argument to switch between first match and all matches (a default which is equivalent to «find . -name file»):

How can I find where Python is installed on Windows?

I want to find out my Python installation path on Windows. For example:

How can I find where Python is installed?

18 Answers 18

In your Python interpreter, type the following commands:

Also, you can club all these and use a single line command. Open cmd and enter following command

If you have Python in your environment variable then you can use the following command in cmd:

or for Unix enviroment

command line image :

It would be either of

• C:\Python36
• C:\Users\(Your logged in User)\AppData\Local\Programs\Python\Python36

If you need to know the installed path under Windows without starting the python interpreter, have a look in the Windows registry.

Each installed Python version will have a registry key in either:

In 64-bit Windows, it will be under the Wow6432Node key:

On my windows installation, I get these results:

(You can also look in sys.path for reasonable locations.)

or try using (in cmd )

In the sys package, you can find a lot of useful information about your installation:

I’m not sure what this will give on your Windows system, but on my Mac executable points to the Python binary and exec_prefix to the installation root.

You could also try this for inspecting your sys module:

If you have the py command installed, which you likely do, then just use the —list-paths argument to the command:

Installed Pythons found by py Launcher for Windows
-3.8-32 C:\Users\cscott\AppData\Local\Programs\Python\Python38-32\python.exe *
-2.7-64 C:\Python27\python.exe

The * indicates the currently active version for scripts executed using the py command.

If You want the Path After successful installation then first open you CMD and type python or python -i

It Will Open interactive shell for You and Then type

Hit enter and you will get path where your python is installed .

To know where Python is installed you can execute where python in your cmd.exe.

You can search for the «environmental variable for you account». If you have added the Python in the path, it’ll show as «path» in your environmental variable account.

but almost always you will find it in «C:\Users\%User_name%\AppData\Local\Programs\Python\Python_version«

the ‘AppData‘ folder may be hidden, make it visible from the view section of toolbar.

If anyone needs to do this in C# I’m using the following code:

Go to C:\Users\USER\AppData\Local\Programs\Python\Python36 if it is not there then open console by windows+^R Then type cmd and hit enter type python if installed in your local file it will show you its version from there type the following import os import sys os.path.dirname(sys.executable)

This worked for me: C:\Users\Your_user_name\AppData\Local\Programs\Python

My currently installed python version is 3.7.0

Hope this helps!

if you still stuck or you get this

simply do this replace 2 \ with one

I installed 2 and 3 and had the same problem finding 3. Fortunately, typing path at the windows path let me find where I had installed it. The path was an option when I installed Python which I just forgot. If you didn’t select setting the path when you installed Python 3 that probably won’t work — unless you manually updated the path when you installed it. In my case it was at c:\Program Files\Python37\python.exe

If you use anaconda navigator on windows, you can go too enviornments and scroll over the enviornments, the root enviorment will indicate where it is installed. It can help if you want to use this enviorment when you need to connect this to other applications, where you want to integrate some python code.

Not the answer you’re looking for? Browse other questions tagged python windows path or ask your own question.

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Find all files in a directory with extension .txt in Python

How can I find all the files in a directory having the extension .txt in python?

26 Answers 26

or if you want to traverse directory, use os.walk :

Something like that should do the job

Something like this will work:

You can simply use pathlib s glob 1 :

If you want it recursive you can use .glob(‘**/*.txt)

1 The pathlib module was included in the standard library in python 3.4. But you can install back-ports of that module even on older Python versions (i.e. using conda or pip ): pathlib and pathlib2 .

Or with generators:

Here’s more versions of the same that produce slightly different results:

glob.iglob()

glob.glob1()

fnmatch.filter()

Python v3.5+

Fast method using os.scandir in a recursive function. Searches for all files with a specified extension in folder and sub-folders. It is fast, even for finding 10,000s of files.

I have also included a function to convert the output to a Pandas Dataframe.

Try this this will find all your files recursively:

To get all ‘.txt’ file names inside ‘dataPath’ folder as a list in a Pythonic way:

Python has all tools to do this:

I did a test (Python 3.6.4, W7x64) to see which solution is the fastest for one folder, no subdirectories, to get a list of complete file paths for files with a specific extension.