| py2 | Python Script |
| py3 | Python Script |
| pye | SOURCEdefender Encrypted Script |
| pyf | F2PY Signature File |
| pym | Python Macro File |
| pyn | Pynguin Project |
| pynb | IPython Notebook Document |
| pyo | Python Optimized Code |
| pyp | AllPlan PythonParts Script |
| pyr | Python Repository |
| pyt | Python Declarations Data |
| pyw | Python Script |
| pyx | Pyrex Source |
| q | QL-R-kemi Unformatted Source |
| qbe | dBASE IV Saved Query |
| qbs | QuickBasic Source Code |
| qc | QuakeC Source Code |
| qcf | QuickBasic Coordinates File |
| qf | Qompose Web Page Template |
| qhc | QT Help Collection |
| qip | Altera Quartus II IP File |
| qlb | QuickBASIC Library |
| qlf | SWI-Prolog Quick Load File |
| qlp | Yasol QLP Program |
| qm | Qt Compiled Translation Source |
| qma | Qedit Data |
| qml | QML Source Code |
| qmlc | QQmlEngine QML Cache |
| qmm | QM Compiled Macro |
| qpg | QNX Package Generation File |
| qpm | QNX Package Manifest File |
| qpr | QNX Package Repository File |
| qpr | Visual FoxPro Query Program |
| qps | CUTEr QPS Model |
| qpx | Visual FoxPro Compiled Query Program |