26. Debugging and Profiling

https://docs.python.org/2/library/debug.html

These libraries help you with Python development: the debugger enables you to step through code, analyze stack frames and set breakpoints etc., and the profilers run code and give you a detailed breakdown of execution times, allowing you to identify bottlenecks in your programs.

• 1. bdb — Debugger framework
• 2. pdb — The Python Debugger
  • 2.1. Debugger Commands
• 3. cProfile, profile — The Python Profilers
  • 3.1. Introduction to the profilers
  • 3.2. Instant User’s Manual
  • 3.3. profile and cProfile Module Reference
  • 3.4. The Stats Class
  • 3.5. What Is Deterministic Profiling?
  • 3.6. Limitations
  • 3.7. Calibration
  • 3.8. Using a custom timer
• 4. hotshot — High performance logging profiler
  • 4.1. Profile Objects
  • 4.2. Using hotshot data
  • 4.3. Example Usage
• 5. timeit — Measure execution time of small code snippets
  • 5.1. Basic Examples
  • 5.2. Python Interface
  • 5.3. Command-Line Interface
  • 5.4. Examples
• 6. trace — Trace or track Python statement execution
  • 6.1. Command-Line Usage
  • 6.2. Programmatic Interface