Walk The Line Mac OS

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  • Python os.walk The os.walk function retrieves a list of files contained within a tree. The method iterates over each directory in a tree. Then, os.walk returns the name of every file and folder within a directory and any of its subdirectories. The syntax for the os.walk method is as follows.
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Description

Python method walk() generates the file names in a directory tree by walking the tree either top-down or bottom-up.

Syntax

Following is the syntax for walk() method −

Parameters

  • top − Each directory rooted at directory, yields 3-tuples, i.e., (dirpath, dirnames, filenames)

  • topdown − If optional argument topdown is True or not specified, directories are scanned from top-down. If topdown is set to False, directories are scanned from bottom-up.

  • onerror − This can show error to continue with the walk, or raise the exception to abort the walk.

  • followlinks − This visits directories pointed to by symlinks, if set to true.

Return Value

This method returns value.

Example

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The following example shows the usage of walk() method.

Let us compile and run the above program, this will scan all the directories and subdirectories bottom-to-up

If you will change the value of topdown to True, then it will give you the following result −

Using the installer script and the setup command is the fastest way to get up and running with the CLI.

Installing the CLI

The installer script automatically installs the CLI and its dependencies, Python and virtualenv. Before running the installer, be sure you meet the Requirements.

Note
Oracle Autonomous Linux 7 and Cloud Shell have the CLI pre-installed.

Linux and Unix (Including Oracle Linux 8)

  1. Open a terminal.

  2. To run the installer script, run the following command.

    Note
    To run a 'silent' install that accepts all default values with no prompts, use the --accept-all-defaults parameter.
  3. Respond to the Installation Script Prompts.

Oracle Linux 7

If you're using Oracle Linux 7, you can use yum to install the CLI.

To use yum to install the CLI:

Walk The Line Mac OS

The CLI will be installed to the Python site packages:

  • /usr/lib/python3.6/site-packages/oci_cli
  • /usr/lib/python3.6/site-packages/services

Documentation and examples will be installed in the /usr/share/doc/python36-oci-cli-<version>/ directory.

To uninstall the CLI:

Mac OS X

You can use Homebrew to install, upgrade, and uninstall the CLI on Mac OS.

To install the CLI on Mac OS X with Homebrew:

To upgrade your CLI install on Mac OS X using Homebrew:

To uninstall the CLI on Mac OS X using Homebrew:

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Windows

  1. Open the PowerShell console using the Run as Administrator option.

  2. The installer enables auto-complete by installing and running a script. To allow this script to run, you must enable the RemoteSigned execution policy.

    To configure the remote execution policy for PowerShell, run the following command.

  3. Download the installer script:
  4. Run the installer script with or without prompts:
    1. To run the installer script with prompts, run the following command:

      ...and respond to the Installation Script Prompts.

    2. To run the installer script without prompting the user, accepting the default settings, run the following command:

Installation Script Prompts

The installation script prompts you for the following information.

Walk the line mac os x
  • If you do not have a compatible version of Python installed:
    • Windows and Linux: You are prompted to provide a location for installing the binaries and executables. The script will install Python for you.
    • MacOS: You are notified that your version of Python is incompatible. You must upgrade before you can proceed with the installation. The script will not install Python for you.
  • When prompted to upgrade the CLI to the newest version, respond with Y to overwrite an existing installation.
  • When prompted to update your PATH, respond with Y to be able to invoke the CLI without providing the full path to the executable. This will add oci.exe to your PATH.