After installing Anaconda (64bit) on OSX 10.10 and trying to start ipython notebook via ipython notebook, I get the error below. Tried your suggestion, the same error persists running either ipython or ipython notebook. I did not try to install Jupyter again.

To install Anaconda 2, go to the download page for the Python 3 versions. It's done downloading, and then follow the usual steps for installing Mac software. 3.4.0.2 pip>beautiful-soup 4.3.1 py34_0 beautifulsoup4 4.3.1 pip>binstar 0.5.3. Bokeh 0.4.4 np18py34_1 cdecimal 2.3 py34_0 pycosat pycparser 2.10 0.6.1.

Here's my conda list after the suggested remove/clean/install. Looks like it's still Pexpect 3.3. Should we force it to install a specific version of Pexpect? Additionally, anaconda search -t conda pexpect does not show a version newer than 3.3 for osx-64. Packages: Name Version Package Types Platforms ------------------------- ------ --------------- --------------- asmeurer/pexpect 2.4 conda osx-64: auto/pexpect 3.1 conda linux-64, linux-32, osx-64: Pexpect allows easy control of interactive console applications.

Auto/pexpect-nm 2.6 conda linux-64: auto/pexpect-u 2.5.1 conda linux-64: mhworth/pexpect 3.0 conda linux-64, osx-64: Pexpect allows easy control of interactive console applications. Pdrops/pexpect 3.0 conda linux-64, osx-64: Pexpect allows easy control of interactive console applications. Severson/pexpect 2.4 conda osx-64: ska/pexpect 3.3 conda linux-64, osx-64: Pexpect allows easy control of interactive console applications. Travis/pexpect 2.4 conda osx-64: xanderhsia/pexpect 3.3 conda osx-64: Pexpect allows easy control of interactive console applications.

Packages for macOS with Python 3.7 Platform: MacOS 64-bit Python version: 3.7 Number of supported packages: 621 Name Version Summary / License In Installer 0.1.0 A configuration metapackage for enabling Anaconda-bundled jupyter extensions / BSD 0.4.0 A configuration metapackage for enabling Anaconda-bundled jupyter extensions / BSD 2.2.1 Matrices describing affine transformation of the plane. / BSD 3-Clause 1.6.1 A data analysis library that is optimized for humans instead of machines. / COPYING 0.2.0 agate-dbf adds read support for dbf files to agate. / MIT 0.2.2 agate-excel adds read support for Excel files (xls and xlsx) to agate. / MIT 0.10.0 Async client for aws services using botocore and aiohttp / Apache 2 0.4.0 File support for asyncio / Apache 2.0 3.4.4 Async http client/server framework (asyncio) / Apache 2.0 0.7.12 Configurable, Python 2+3 compatible Sphinx theme.

/ BSD 3-Clause 1.0.5 A database migration tool for SQLAlchemy. / MIT 1.1.0 Delete Anaconda configuration files / BSD 1.7.2 anaconda.org command line client library / BSD 3-clause 1.9.6 Anaconda Navigator / proprietary - Continuum Analytics, Inc. 0.8.2 Tool for encapsulating, running, and reproducing data science projects / BSD 3-Clause 1.3.8 tool for (passively) verifying conda recipes and conda packages / BSD 1.5.2 Convert text with ANSI color codes to HTML or to LaTeX. / LGPLv3+ 1.9.9 Java build tool / Apache 2.0 0.0.10 PyQt4/PyQt5 compatibility layer. / GPL-3.0 1.4.3 A small Python module for determining appropriate platform-specific dirs. / MIT 0.1.0 Disable App Nap on OS X 10.9 / BSD 2-Clause 1.0.1 Control AppleScriptable applications from Python / Public-Domain 4.4.0 application tools / BSD 3-clause 1.9.4 Bash tab completion for argparse / Apache 2.0 0.12.1 Better dates & times for Python. / Apache-2.0 0.24.0 Python ASN.1 library with a focus on performance and a pythonic API / MIT 2.1.0 A abstract syntax tree for Python with inference support.

/ LGPL 2.1 3.1 Community-developed Python Library for Astronomy / BSD 3.0.1 Timeout context manager for asyncio programs / Apache 2.0 0.18.2 A fast PostgreSQL Database Client Library for Python/asyncio. / Apache 2.0 0.25.2 A fast PostgreSQL Database Client Library for Python/asyncio. / Apache 2.0 1.2.1 Atomic file writes. / MIT 18.2.0 attrs is the Python package that will bring back the joy of writing classes by relieving you from the drudgery of implementing object protocols (aka dunder methods).

/ MIT 1.16.1 Tool for automatically generating Makefile.in files compliant with the GNU Coding Standards. / GPL3 0.12.6 An Auto-Visualization library for pandas dataframes / BSD 3-clause 1.0.2 Microsoft Azure SDK for Python / Apache License 2.0 2.6.0 Utilities to internationalize and localize Python applications / BSD 3-clause 0.1.0 Specifications for callback functions passed in to an API / BSD-3-Clause 1.0 / BSD 0.1.1 Backport of new features in Python's os module / Python Software Foundation 1.0.0 A backport of the get_terminal_size function from Python 3.3's shutil.