4.4.1 stacktrace for "b2 license"

[leres]

Given _internal/console_tool.py:

piplicenses = None
prettytable = None
with suppress(ImportError):
    import piplicenses
    import prettytable

I see an AttributeError stack trace when I run b2 license. It would be nice instead to either suppress the license sub-command or print and error message when it is requested.

[olzhasar-reef]

@leres
Could you share which version of b2 are you using?

b2 version

[leres]

ice 4 % b2 version
b2 command line tool, version 4.4.1
ice 5 % pkg info | fgrep -e -b2
py311-b2-4.4.1                 Command Line Interface for Backblaze's B2 storage service
py311-b2sdk-2.9.4              Backblaze B2 SDK

[olzhasar-reef]

@leres
Could you also share the stack trace of the error you're being shown and the output of pip freeze of your Python environment?

[leres]

I'm not using pip, I'm using the FreeBSD package system.

ice 1304 % b2 license
Traceback (most recent call last):
  File "/usr/local/bin/b2", line 5, in <module>
    from b2._internal.b2v4.__main__ import main
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/b2v4/__main__.py", line 13, in <module>
    main()
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/console_tool.py", line 5623, in main
    exit_status = ct.run_command(sys.argv)
                  ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/console_tool.py", line 5487, in run_command
    return command.run(args)
           ^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/console_tool.py", line 1083, in run
    return self._run(args)
           ^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/console_tool.py", line 4305, in _run
    self._put_license_text(stream, with_packages=args.with_packages)
  File "/usr/local/lib/python3.11/site-packages/b2/_internal/console_tool.py", line 4328, in _put_license_text
    files_table = prettytable.PrettyTable(['File name', 'Content'], hrules=prettytable.ALL)
                  ^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'PrettyTable'

Here are the python modules I've installed:

ice 1305 % pkg info | fgrep py311
ap24-py311-mod_wsgi-4.9.4      Python WSGI adapter module for Apache
py311-Babel-2.17.0_1           Collection of tools for internationalizing Python applications
py311-Jinja2-3.1.6             Fast and easy to use stand-alone template engine
py311-acme-4.1.1,1             ACME protocol implementation in Python
py311-aioquic-1.2.0            Implementation of QUIC and HTTP/3
py311-alabaster-0.7.16         Modified Kr Sphinx theme
py311-annotated-types-0.7.0    Reusable constraint types to use with typing.Annotated
py311-anyio-4.9.0              High level compatibility layer for multiple asynchronous event loop implementations
py311-argcomplete-3.6.2        Bash tab completion for argparse
py311-arrow-1.3.0_1            Better dates and times for Python
py311-asgiref-3.9.1            ASGI specs, helper code, and adapters
py311-astroid-3.3.11           Abstract syntax tree for Python with inference support
py311-asttokens-3.0.0          Annotate AST trees with source code positions
py311-async_generator-1.10_1   Tiny library to add async generators to Python 3.5
py311-attrs-25.3.0             Python attributes without boilerplate
py311-b2-4.4.1                 Command Line Interface for Backblaze's B2 storage service
py311-b2sdk-2.9.4              Backblaze B2 SDK
py311-backports.tarfile-1.0.0  Backport of CPython tarfile module
py311-bitarray-3.0.0           Efficient arrays of booleans
py311-bitstring-4.3.1          Simple construction, analysis, and modification of binary data
py311-cairo-1.28.0,1           Python bindings for Cairo
py311-certbot-4.1.1,1          Let's Encrypt client
py311-certifi-2025.7.14        Mozilla SSL certificates
py311-cffi-1.17.1              Foreign Function Interface for Python calling C code
py311-charset-normalizer-3.4.2 Real First Universal Charset Detector
py311-configargparse-1.7.1     Drop-in replacement for argparse
py311-configobj-5.0.9          Simple but powerful config file reader and writer
py311-cryptography-44.0.3_2,1  Cryptographic recipes and primitives for Python developers
py311-dbus-1.3.2               Python bindings for the D-BUS messaging system
py311-decorator-5.2.1          Decorators for Humans
py311-dill-0.3.9               Serialize all of python
py311-distro-1.9.0             Linux OS platform information API
py311-django51-5.1.11          High-level Python Web Framework
py311-dnspython-2.7.0,1        DNS toolkit for Python
py311-docutils-0.21.2,1        Python Documentation Utilities
py311-ecdsa-0.19.1             ECDSA cryptographic signature library (pure python)
py311-esptool-4.9.0            Utility to communicate with Espressif ESP8266 & ESP32 chips
py311-evdev-1.9.1_1            Bindings to the Linux input handling subsystem
py311-executing-2.2.0          Get the currently executing AST node of a frame, and other information
py311-filemagic-1.6_1          Python API for libmagic, the library behind the Unix file command
py311-flynt-1.0.6              Convert Python scripts from string formatting to f-strings
py311-future-0.18.3_1          Clean single-source support for Python 3 and 2
py311-gmpy2-2.2.1_1            GMP/MPIR, MPFR, and MPC interface to Python
py311-h11-0.16.0               Pure-Python, bring-your-own-I/O implementation of HTTP/1.1
py311-h2-4.1.0_1               HTTP/2 State-Machine based protocol implementation
py311-hpack-4.0.0_1            HTTP/2 header encoding (HPACK) logic implementation
py311-html5-parser-0.4.12_3    Fast implementation of the HTML 5 parsing spec for Python
py311-html5lib-1.1_1           Python based HTML parser based on the HTML5 spec
py311-httpcore-1.0.9           Minimal low-level HTTP client
py311-httpx-0.28.1_1           Next generation HTTP client
py311-hyperframe-6.0.0_1       Python module that decodes binary streams into HTTP/2 frames
py311-idna-3.10                Internationalized Domain Names in Applications (IDNA)
py311-imagesize-1.4.1_1        Get image size from png/jpeg/jpeg2000/gif file
py311-importlib-metadata-8.7.0 Read metadata from Python packages
py311-intelhex-2.3.0_1         Python library and scripts to work with files in Intel HEX format
py311-ipython-8.18.1_1         Enhanced Interactive Python shell
py311-isort-6.0.1              Python utility/library to sort Python imports
py311-jaraco.classes-3.4.0     Python class routines
py311-jaraco.context-5.3.0     Useful decorators and context managers
py311-jaraco.functools-4.2.1   Additional functools for Python
py311-jedi-0.19.1_1            Autocompletion tool for Python
py311-josepy-2.1.0             JOSE protocol implementation in Python
py311-keyring-25.6.0,1         Store and access your passwords safely
py311-lbl-ptags-1.0            Python ptags script
py311-logfury-1.0.1_1          Toolkit for logging of library method calls
py311-m2r-0.3.1_2              Convert markdown formatted file with reST markup to reST format
py311-markupsafe-3.0.2         Implements XML/HTML/XHTML Markup safe string for Python
py311-matplotlib-inline-0.1.6_1 Matplotlib Inline Back-end for IPython and Jupyter
py311-mccabe-0.7.0_2           Ned's script to check McCabe complexity
py311-mechanize-0.4.10_1       Stateful programmatic web browsing in Python
py311-mistune-3.1.3            Fastest markdown parser in pure Python
py311-mistune0-0.8.4_2         Fastest markdown parser in pure Python
py311-more-itertools-10.6.0    More routines for operating on iterables, beyond itertools
py311-mpi4py-4.1.0             Python bindings for MPI (OpenMPI)
py311-olefile-0.46_1           Python module to read MS OLE2 files
py311-openssl-25.0.0_1,1       Python interface to the OpenSSL library
py311-outcome-1.3.0_2          Capture the outcome of Python function calls
py311-packaging-25.0           Core utilities for Python packages
py311-paho-mqtt-2.1.0          MQTT version 3.1/3.1.1 client class
py311-parsedatetime-2.6_1      Python module for parsing 'human readable' date/time expressions
py311-parso-0.8.4_1            Python Parser
py311-pexpect-4.9.0_1          Python module for controlling interactive programs in pseudo-terminal
py311-phx-class-registry-5.1.1_1 Factory+Registry pattern for Python classes
py311-pillow-11.3.0            Fork of the Python Imaging Library (PIL)
py311-platformdirs-4.3.8       Python module for determining appropriate platform-specific dirs
py311-png-0.0.17_1             Python PNG encoder/decoder
py311-prompt-toolkit-3.0.51    Library for building powerful interactive command lines in Python
py311-ptyprocess-0.7.0_1       Run a subprocess in a pseudo terminal
py311-pure-eval-0.2.3          Safely evaluate AST nodes without side effects
py311-pyasn1-0.6.0             ASN.1 toolkit for Python
py311-pyasn1-modules-0.4.1     Collection of ASN.1 data structures for py-pyasn1
py311-pycparser-2.22           C parser in Python
py311-pygments-2.19.2          Syntax highlighter written in Python
py311-pygobject-3.50.0         Python bindings for GObject Introspection
py311-pylsqpack-0.3.22         Python wrapper for the ls-qpack QPACK library
py311-pyparsing-3.2.3          General parsing module for Python
py311-pyrfc3339-1.1_1          Generate and parse RFC 3339 timestamps
py311-pyserial-3.5_3           Serial port encapsulation library for Python
py311-pysocks-1.7.1_1          Python SOCKS module
py311-pysrp-1.0.22_1           Python Secure Remote Password protocol (SRP)
py311-python-dateutil-2.9.0    Extensions to the standard Python datetime module
py311-pytz-2025.2_1,1          World Timezone Definitions for Python
py311-pytz-deprecation-shim-0.1.0.post0_3 Shims to make deprecation of pytz easier
py311-pyudev-0.24.1_1          Pure Python libudev binding
py311-pyyaml-6.0.1_1           Python YAML parser
py311-pyzmq-27.0.0             Python bindings for ZeroMQ
py311-qrcode-8.2               QR Code image generator
py311-reedsolo-1.6.0_1         Pure-Python Reed Solomon encoder/decoder
py311-requests-2.32.4          Python HTTP for Humans
py311-rst2ansi-0.1.5_1         RST converter to ansi-decorated console output
py311-selenium-4.12.0_1        Python bindings for Selenium
py311-service-identity-24.2.0  Service identity verification for pyOpenSSL & cryptography
py311-setuptools-63.1.0_3      Python packages installer
py311-six-1.17.0               Python 2 and 3 compatibility utilities
py311-sniffio-1.3.1            Sniff out which async library your code is running under
py311-snowballstemmer-3.0.1    Snowball stemming library collection for Python
py311-socksio-1.0.0_1          Sans-I/O implementation of SOCKS4, SOCKS4A, and SOCKS5
py311-sortedcontainers-2.4.0_1 Python Sorted Container Types: SortedList, SortedDict, and SortedSet
py311-speedtest-cli-2.1.3_1    Command line interface for testing internet bandwidth
py311-sphinx-5.3.0_3,1         Python documentation generator
py311-sphinx-mdinclude-0.6.2   Sphinx extension that enables including Markdown documents
py311-sphinx_rtd_theme-1.0.0_1 Mobile-friendly py-sphinx theme
py311-sphinxcontrib-applehelp-2.0.0 Extension which outputs Apple help books
py311-sphinxcontrib-devhelp-2.0.0 Sphinx extension which outputs Devhelp document
py311-sphinxcontrib-htmlhelp-2.1.0 Sphinx extension which renders HTML help files
py311-sphinxcontrib-jsmath-1.0.1_1 Sphinx extension which renders display math in HTML via JavaScript
py311-sphinxcontrib-qthelp-2.0.0 Sphinx extension which outputs QtHelp document
py311-sphinxcontrib-serializinghtml-2.0.0 Sphinx extension which outputs serialized HTML files (json and pickle)
py311-sqlite3-3.11.13_10       Standard Python binding to the SQLite3 library (Python 3.11)
py311-sqlparse-0.5.3           Non-validating SQL parser for Python
py311-stack-data-0.6.3_1       Extract data from python stack frames and tracebacks for informative displays
py311-tabulate-0.9.0           Pretty-print tabular data in Python
py311-tkinter-3.11.13_11       Python bindings to the Tk widget set (Python 3.11)
py311-tomlkit-0.13.3           Style-preserving TOML library
py311-tqdm-4.67.1              Fast, extensible progress bar for Python
py311-traitlets-5.14.3         Configuration system for Python applications
py311-trio-0.30.0              Library for async concurrency and I/O
py311-trio-websocket-0.11.1_1  WebSocket library for Trio
py311-truststore-0.10.1        Verify certificates using native system trust stores
py311-types-python-dateutil-2.8.19.14_1 Typing stubs for python-dateutil
py311-typing-extensions-4.14.1 Backported and Experimental Type Hints for Python 3.5+
py311-tzdata-2025.2            Provider of IANA time zone data
py311-tzlocal-5.2              Returns the tzinfo object for the local timezone
py311-urllib3-1.26.20,1        HTTP library with thread-safe connection pooling, file post, and more
py311-wcwidth-0.2.8_1          Determine the printable width of the terminal
py311-webencodings-0.5.1_1     Character encoding aliases for legacy web content
py311-wsproto-1.2.0_1          Sans-IO WebSocket protocol implementation
py311-wxPython42-4.2.2_2       GUI toolkit for the Python programming language
py311-zipp-3.21.0              Backport of pathlib-compatible object wrapper for zip files
pylint-py311-3.3.7             Analyzes python source code looking for bugs and signs of poor quality

[olzhasar-reef]

@leres This should now be fixed in v4.4.2