IronLanguages/ironpython3

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Implementation of Python 3.x for .NET Framework that is built on top of the Dynamic Language Runtime.

Stars: 2.8k
Forks: 316
Open beginner issues: 0
Indexed issues: 302
Avg merge: 1d 9h
Merged PRs (30d): 1

Dominant language: C#
License: Apache-2.0
Last GitHub push: Aug 31, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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302 open issues indexed

ImportException: IronPython3 NET Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

IronLanguages/ironpython3#1747 · 1 comment · Opened Oct 30, 2023
MSSQL support in IronPython 3.4 Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1746 · 5 comments · Opened Oct 25, 2023
Different behaviour of simple script when compiled Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

IronLanguages/ironpython3#1745 · 2 comments · Opened Oct 16, 2023
GC related tests failing on Mono Open

Mono testing

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1743 · Opened Sep 13, 2023
Confusion between class variable and instance variable when descriptor is used Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 38/100

IronLanguages/ironpython3#1722 · 1 comment · Opened Aug 11, 2023
Memory leak when calling list(...) on OrderedDict Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

IronLanguages/ironpython3#1718 · 6 comments · Opened Jul 31, 2023
IronPython Installer Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

IronLanguages/ironpython3#1707 · 3 comments · Opened Jul 8, 2023
PEP 540 – Add a new UTF-8 Mode Open

What's New In Python 3.7

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1695 · Opened Jun 22, 2023
PYTHON environment variables are ignored Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1694 · Opened Jun 22, 2023
Add "how-to" documentation for extending IronPython with a C# module Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

IronLanguages/ironpython3#1686 · 1 comment · Opened May 20, 2023
unity error for android build : Type'Microsoft.Scripting.Hosting.ScriptHost' doenst provide a suitable public constructor or its implementation is faulty:constructor on type Microsoft.Scripting.Hosting.ScriptHost not found Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1682 · Opened May 6, 2023
[Android] PlatformNotSupportedException when importing non-builtin modules Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1679 · 1 comment · Opened Apr 10, 2023
future feature is not defined:annotations Open

What's New In Python 3.7

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1675 · 1 comment · Opened Mar 26, 2023
IronPython.Runtime.Exceptions.ImportException: 'No module named 'pygame'' Open

not supported - CPython extension

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1674 · 3 comments · Opened Mar 19, 2023
IronPython parsing of sys.version Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

IronLanguages/ironpython3#1667 · 4 comments · Opened Mar 9, 2023
segmentation fault on function call on .NET 6 macOS arm64 Open

.NET 6 macOS

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1664 · Opened Feb 26, 2023
Generate testing assemblies at compile time Open

testing

Difficulty 4/5 3-5 days Newbie friendliness 38/100

IronLanguages/ironpython3#1663 · 1 comment · Opened Feb 25, 2023
IronPython 3.4 with Visual Studio 2022 | How to debug Open

Difficulty 4/5 3-5 days Newbie friendliness 18/100

IronLanguages/ironpython3#1659 · 2 comments · Opened Feb 22, 2023
Add rich comparisons and operators(?) to IntPtr/UIntPtr Open

.NET interop

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1651 · Opened Jan 15, 2023
dict subclasses which override __iter__ should be treated as mappings Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

IronLanguages/ironpython3#1639 · Opened Jan 1, 2023
Type `str` is missing `casefold` method Open

What's New In Python 3.3

Difficulty 3/5 1-2 days Newbie friendliness 42/100

IronLanguages/ironpython3#1635 · Opened Dec 29, 2022
Missing doctests on builtin methods Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

IronLanguages/ironpython3#1630 · Opened Dec 28, 2022
Formatting issues Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

IronLanguages/ironpython3#1629 · Opened Dec 26, 2022
Unexpected output precision and/or rounding results in IronPython 3.4.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1626 · 1 comment · Opened Dec 23, 2022
System.MissingMemberException: "'module' object has no attribute 'add_dll_directory'" Open

not supported - CPython extension

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1621 · 12 comments · Opened Dec 17, 2022
Memory leak when assigning to a bytearray via subscripting. Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 42/100

IronLanguages/ironpython3#1618 · 2 comments · Opened Dec 12, 2022
Applying for-in structure in 'yield from' crashes ironpython. Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1616 · 1 comment · Opened Dec 12, 2022
Transforming types of loop condition in 'for' crashes ironpython Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 38/100

IronLanguages/ironpython3#1613 · 2 comments · Opened Dec 10, 2022
StackOverflowException even when MaxRecursion is set Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1611 · Opened Dec 9, 2022
Changing __bases__ attribute in issubclass() causes core dumped Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1608 · 1 comment · Opened Dec 9, 2022
Trying to run an unknown module results in Unhandled exception Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

IronLanguages/ironpython3#1605 · Opened Dec 8, 2022
[macOS] LookupError: unknown encoding: cp936 Open

macOS

Difficulty 3/5 1-2 days Newbie friendliness 35/100

IronLanguages/ironpython3#1593 · 2 comments · Opened Nov 9, 2022
Exception on using example in GITHUB encoding 850 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1569 · 6 comments · Opened Sep 21, 2022
test_namebinding fails when run using ipy Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1564 · Opened Sep 17, 2022
Exception context not set in certain cases Open

3.6

Difficulty 4/5 3-5 days Newbie friendliness 30/100

IronLanguages/ironpython3#1557 · Opened Sep 10, 2022
dict should be insertion-order preserving Open

What's New In Python 3.7

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1556 · Opened Sep 10, 2022
Rich compasions of Int32-based ints and subclasses of int return NotImplemented Open

CPython compatibility

Difficulty 3/5 1-2 days Newbie friendliness 45/100

IronLanguages/ironpython3#1554 · 8 comments · Opened Sep 9, 2022
math.cos/math.tan precision near pi/2 does not match CPython on .NET Framework Open

.NET Framework CPython compatibility wontfix

Difficulty 4/5 3-5 days Newbie friendliness 20/100

IronLanguages/ironpython3#1550 · Opened Sep 8, 2022
test_spwd is failing in 3.6 on macOS Open

3.6 macOS

Difficulty 3/5 1-2 days Newbie friendliness 20/100

IronLanguages/ironpython3#1545 · Opened Sep 2, 2022
test_support.test_change_cwd is failing on macOS Open

3.6 macOS

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

IronLanguages/ironpython3#1543 · Opened Sep 1, 2022
test_support failing interpreter flags tests Open

3.6

Difficulty 3/5 1-2 days Newbie friendliness 42/100

IronLanguages/ironpython3#1541 · Opened Aug 30, 2022
test_set.test_hash_effectiveness is failing in 3.6 Open

3.6

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1538 · Opened Aug 27, 2022
Equality operator fails if lookup for __eq__ in class is unsuccessful Open

CPython compatibility

Difficulty 4/5 3-5 days Newbie friendliness 42/100

IronLanguages/ironpython3#1530 · Opened Aug 7, 2022
Properly handle preferred encoding Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

IronLanguages/ironpython3#1529 · Opened Aug 6, 2022
`ctypes` does not work on Windows and has memory corruption Open

module-ctypes

Difficulty 5/5 Over a week Newbie friendliness 25/100

IronLanguages/ironpython3#1526 · 4 comments · Opened Aug 5, 2022
`test_httplib_stdlib` failure on Mono+macOS Open

3.6 macOS module-socket Mono

Difficulty 4/5 3-5 days Newbie friendliness 28/100

IronLanguages/ironpython3#1523 · Opened Aug 1, 2022
test_timeout fails on Mono Open

module-socket Mono

Difficulty 4/5 3-5 days Newbie friendliness 42/100

IronLanguages/ironpython3#1522 · Opened Jul 31, 2022
iter not called on subclasses of bytes Open

core

Difficulty 4/5 3-5 days Newbie friendliness 38/100

IronLanguages/ironpython3#1519 · 1 comment · Opened Jul 30, 2022
Creating socket from descriptor resets timeout on all sockets on same descriptor Open

3.6 module-socket

Difficulty 5/5 Over a week Newbie friendliness 35/100

IronLanguages/ironpython3#1512 · Opened Jul 17, 2022
ipy throws StandardError on EventHandler Open

confirmed

Difficulty 4/5 3-5 days Newbie friendliness 25/100

IronLanguages/ironpython3#1492 · 3 comments · Opened Jun 9, 2022

IronLanguages/ironpython3

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