PyCon 2011 was a conference held in Atlanta, GA in 2011 that attracted around 1500 attendees, up from 1100 the previous year. The conference covered many topics related to Python including web development, scientific computing, networking, and systems testing. Several Python implementations were discussed including CPython, PyPy, Jython, and IronPython. Popular tools and frameworks mentioned for web development included Django, PostgreSQL, MongoDB, Celery, and JSON. For scientific computing, Python is often used for large scale parallelized simulations with computationally intensive parts in other languages like C and Fortran. Parallel computing tools discussed included Celery, mpi4py, and mrjob.