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Fatal error in launcher: Unable to create process using ""C:\Program Files (x86)\Python33\python.exe" "C:\Program Files (x86)\Python33\pip.exe""

python
pip-installation
windows-issues
path-modification
Anton ShumikhinbyAnton Shumikhin·Nov 15, 2024
TLDR

Quickly resolve the launcher error with:

# Why did the Python get to the pip?
python -m pip <command>

Replace <command> with operations such as install, uninstall, and so forth. To upgrade pip, command:

# Python gives pip a shiny new upgrade!
python -m pip install --upgrade pip

Using this format, you skip the defective launcher, directing Python to run pip, thereby ensuring your package management commands go off without a hitch.

Address the spaces in your path

In the Windows environment, keep two key pointers in mind during the Python installation:

  • Select an installation path without spaces to prevent complications with script paths down the line.
  • Always use the module execution syntax (python -m pip), which is more reliable in Windows systems.

Modify pip.exe with hex editor

If the launcher error appears, you have the option to:

  • Use a hex editor to adjust the pip.exe file. Find the complete Python path with spaces, and replace it with the abbreviated form (e.g., C:\Progra~1).
  • Remember to save the pip.exe without changing its file size because alteration might cause Windows to block the execution.
  • Make sure you're operating with administrative privileges when you're transforming system files like pip.exe.

Python -m: An all-around MVP

Using python -m is like having a backstage pass:

  • It ensures compatibility with Windows 10 and possible future versions.
  • It prevents running a different Python installation by mistake, especially critical when you have multiple on your system.

Stay backward compatible

Utilize backwards compatible path notation perks:

  • Swap long path names with their short versions (e.g., C:\Progra~1) to sidestep size restrictions.
  • This convention also supports vintage DOS applications in your tech hierarchy.

When system blockades arise

If system settings restrict modifications to pip.exe, ways to still work with pip include:

  • Deploying it directly via python -m pip install XXXX, where XXXX indicates the package you're attempting to install.
  • Opting for a Python installation environment free of spaces in paths to steer clear of these issues during the initial setup.