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18. Python Language Services

Python provides a number of modules to assist in working with the Python language. These modules support tokenizing, parsing, syntax analysis, bytecode disassembly, and various other facilities.

These modules include:

`parser` |  | Access parse trees for Python source code.
`symbol` |  | Constants representing internal nodes of the parse tree.
`token` |  | Constants representing terminal nodes of the parse tree.
`keyword` |  | Test whether a string is a keyword in Python.
`tokenize` |  | Lexical scanner for Python source code.
`tabnanny` |  | Tool for detecting white space related problems in Python source files in a directory tree.
`pyclbr` |  | Supports information extraction for a Python class browser.
`py_compile` |  | Compile Python source files to byte-code files.
`compileall` |  | Tools for byte-compiling all Python source files in a directory tree.
`dis` |  | Disassembler for Python byte code.
`pickletools` |  | Contains extensive comments about the pickle protocols and pickle-machine opcodes, as well as some useful functions.
`distutils` |  | Support for building and installing Python modules into an existing Python installation.