Python 2.7.7 is the last release for which binary installers will be
released on python.org that support OS X 10.3.9 (Panther) and 10.4.x
(Tiger) systems. These systems were last updated by Apple in 2005
and 2007. As of 2.7.8, the 32-bit-only installer will support PPC
and Intel Macs running OS X 10.5 (Leopard) and later. 10.5 was the
last OS X release for PPC machines (G4 and G5). (The 64-/32-bit
installer configuration will remain unchanged.) This aligns Python
2.7.x installer configurations with those currently provided with
Python 3.x. Some of the reasons for making this change are:
there were significant additions and compatibility improvements to
the OS X POSIX system APIs in OS X 10.5 that Python users can now
take advantage of; it is increasingly difficult to build and test
on obsolete 10.3 and 10.4 systems and with the 10.3 ABI; and it is
assumed that most remaining legacy PPC systems have upgraded to 10.5.
To ease the transition, for Python 2.7.7 only we are providing three
binary installers: (1) the legacy deprecated 32-bit-only 10.3+
PPC/Intel format, (2) the newer 32-bit-only 10.5+ PPC/Intel format,
and (3) the current 64-bit/32-bit 10.6+ Intel-only format. While
future releases will not provide the deprecated installer, it will
still be possible to build Python from source on 10.3.9 and 10.4
systems if needed.
To use IDLE or other programs that use the Tkinter graphical user interface toolkit, you need to install a newer third-party version of the Tcl/Tk frameworks. Visit https://www.python.org/download/mac/tcltk/ for current information about supported and recommended versions of Tcl/Tk for this version of Python and of Mac OS X.
Using this version of Python on OS X
====================================
Python consists of the Python programming language interpreter, plus
a set of programs to allow easy access to it for Mac users including
an integrated development environment, IDLE, plus a set of pre-built
extension modules that open up specific Macintosh technologies to
Python programs.
The installer puts applications, an "Update Shell Profile" command,
and a link to the optionally installed Python Documentation into the
"Python $VERSION" subfolder of the system Applications folder,
and puts the underlying machinery into the folder
$PYTHONFRAMEWORKINSTALLDIR. It can
optionally place links to the command-line tools in /usr/local/bin as
well. Double-click on the "Update Shell Profile" command to add the
"bin" directory inside the framework to your shell's search path.
You must install onto your current boot disk, even though the
installer may not enforce this, otherwise things will not work.
You can verify the integrity of the disk image file containing the
installer package and this ReadMe file by comparing its md5 checksum
and size with the values published on the release page linked at
http://www.python.org/download/
Installation requires approximately $INSTALL_SIZE MB of disk space,
ignore the message that it will take zero bytes.
More information on Python in general can be found at
http://www.python.org.
=============================
Installing on OS X 10.8 (Mountain Lion) or later systems
[CHANGED for Python 2.7.9]
=============================
As of Python 2.7.9, installer packages from python.org are now compatible with the Gatekeeper security feature introduced in OS X 10.8. Downloaded packages can now be directly installed by double-clicking with the default system security settings. Python.org installer packages for OS X are signed with the Developer ID of the builder, as identified on the download page for this release (https://www.python.org/downloads/). To inspect the digital signature of the package, click on the lock icon in the upper right corner of the Install Python installer window. Refer to Apple’s support pages for more information on Gatekeeper (http://support.apple.com/kb/ht5290).
=============================
Simplified web-based installs
[NEW for Python 2.7.9]
=============================
With the change to the newer flat format installer package, the download file now has a .pkg extension as it is no longer necessary to embed the installer within a disk image (.dmg) container. If you download the Python installer through a web browser, the OS X installer application may open automatically to allow you to perform the install. If your browser settings do not allow automatic open, double click on the downloaded installer file.
=============================
New Installation Options and Defaults
[NEW for Python 2.7.9]
=============================
The Python installer now includes an option to automatically install or upgrade pip, a tool for installing and managing Python packages. This option is enabled by default and no Internet access is required. If you do not want the installer to do this, select the Customize option at the Installation Type step and uncheck the Install or ugprade pip option.
=============================
Binary installer support for OS X 10.4 and 10.3.9 discontinued
[CHANGED for Python 2.7.9]
=============================
As previously announced, binary installers for Python 2.7.9 from python.org
no longer support Mac OS X 10.3.9 (Panther) and 10.4.x (Tiger) systems.
These systems were last updated by Apple in 2005 and 2007. As of 2.7.9, the
32-bit-only installer supports PPC and Intel Macs running OS X 10.5 (Leopard).
10.5 was the last OS X release for PPC machines (G4 and G5). The 64-/32-bit
installer configuration remains unchanged and should normally be used on OS X
10.6 (Snow Leopard) and later systems. This aligns Python 2.7.x installer
configurations with those currently provided with Python 3.x. If needed,
it is still possible to build Python from source for 10.3.9 and 10.4.
=============================
Python 3 and Python 2 Co-existence
=============================
Python.org Python 2.7 and 3.x versions can both be installed on your system and
will not conflict. Python 2 command names contain a 2 or no digit: python2 (or
python2.7 or python), idle2 (or idle2.7 or idle), pip2 (or pip2.7 or pip), etc.
Command names for Python 3 contain a 3 in them: python3, idle3, pip3, etc.
\b0 consists of the Python programming language interpreter, plus a set of programs to allow easy access to it for Mac OS X users including an integrated development environment
\b IDLE
\b0 and a set of pre-built extension modules that open up specific Macintosh technologies to Python programs.\
\b0 .\
\
\b NEW for Python 2.7.9:
\b0 This package installs a version of
\f1 pip
\f0 , the recommended tool for installing and managing Python packages. Type\
\
\f1 pip2.7 --help
\f0 \
\
See the ReadMe file and the Python documentation for important information, including the dropping of support for OS X 10.3.9 and 10.4 in future Python 2.7.x binary installers.\
for an overview. See the ReadMe file and the Python documentation for more information.\
\
\b IMPORTANT:
...
...
@@ -26,4 +36,4 @@ See the ReadMe file and the Python documentation for important information, incl
\b tkinter
\b0 graphical user interface toolkit require specific versions of the
\b Tcl/Tk
\b0 platform independent windowing toolkit. Visit {\field{\*\fldinst{HYPERLINK "http://www.python.org/download/mac/tcltk/"}}{\fldrslt http://www.python.org/download/mac/tcltk/}} for current information on supported and recommended versions of Tcl/Tk for this version of Python and Mac OS X.}
\ No newline at end of file
\b0 platform independent windowing toolkit. Visit {\field{\*\fldinst{HYPERLINK "https://www.python.org/download/mac/tcltk/"}}{\fldrslt https://www.python.org/download/mac/tcltk/}} for current information on supported and recommended versions of Tcl/Tk for this version of Python and Mac OS X.}
\f0\fs24 \cf0 This package will install Python $FULL_VERSION for Mac OS X $MACOSX_DEPLOYMENT_TARGET for the following architecture(s): $ARCHITECTURES.\
\
\b \ul Update your version of Tcl/Tk to use IDLE or other Tk applications
\b0 \ulnone \
\
To use IDLE or other programs that use the Tkinter graphical user interface toolkit, you need to install a newer third-party version of the
\i Tcl/Tk
\i0 frameworks. Visit {\field{\*\fldinst{HYPERLINK "https://www.python.org/download/mac/tcltk/"}}{\fldrslt https://www.python.org/download/mac/tcltk/}} for current information about supported and recommended versions of
\i Tcl/Tk
\i0 for this version of Python and of Mac OS X.\
\b \ul \
Installing on OS X 10.8 (Mountain Lion) or later systems\
\ulnone [CHANGED for Python 2.7.9]
\b0 \
\
As of Python 2.7.9, installer packages from python.org are now compatible with the Gatekeeper security feature introduced in OS X 10.8. Downloaded packages can now be directly installed by double-clicking with the default system security settings. Python.org installer packages for OS X are signed with the Developer ID of the builder, as identified on the download page for this release ({\field{\*\fldinst{HYPERLINK "https://www.python.org/downloads/"}}{\fldrslt https://www.python.org/downloads/}}). To inspect the digital signature of the package, click on the lock icon in the upper right corner of the
\i Install Python
\i0 installer window. Refer to Apple\'92s support pages for more information on Gatekeeper ({\field{\*\fldinst{HYPERLINK "http://support.apple.com/kb/ht5290"}}{\fldrslt http://support.apple.com/kb/ht5290}}).\
\
\b \ul Simplified web-based installs\
\ulnone [NEW for Python 2.7.9]
\b0 \
\
With the change to the newer flat format installer package, the download file now has a
\f1 .pkg
\f0 extension as it is no longer necessary to embed the installer within a disk image (
\f1 .dmg
\f0 ) container. If you download the Python installer through a web browser, the OS X installer application may open automatically to allow you to perform the install. If your browser settings do not allow automatic open, double click on the downloaded installer file.\
\b \cf0 \ul \ulc0 New Installation Options and Defaults\
\ulnone [NEW for Python 2.7.9]
\b0 \
\
The Python installer now includes an option to automatically install or upgrade
\f1 pip
\f0 , a tool for installing and managing Python packages. This option is enabled by default and no Internet access is required. If you do not want the installer to do this, select the
\i Customize
\i0 option at the
\i Installation Type
\i0 step and uncheck the
\i Install or ugprade pip
\i0 option.\
\
\b \ul Binary installer support for OS X 10.4 and 10.3.9 discontinued\
\ulnone [CHANGED for Python 2.7.9]
\b0 \
\
As previously announced, binary installers for Python 2.7.9 from python.org no longer support Mac OS X 10.3.9 (Panther) and 10.4.x (Tiger) systems. These systems were last updated by Apple in 2005 and 2007. As of 2.7.9, the 32-bit-only installer supports PPC and Intel Macs running OS X 10.5 (Leopard). 10.5 was the last OS X release for PPC machines (G4 and G5). The 64-/32-bit installer configuration remains unchanged and should normally be used on OS X 10.6 (Snow Leopard) and later systems. This aligns Python 2.7.x installer configurations with those currently provided with Python 3.x. If needed, it is still possible to build Python from source for 10.3.9 and 10.4.\
\
\b \ul Python 3 and Python 2 Co-existence\
\b0 \ulnone \
Python.org Python 2.7 and 3.x versions can both be installed on your system and will not conflict. Python 2.7 command names contain a 2 or no digit:
\f1 python2
\f0 (or
\f1 python2.7
\f0 or
\f1 python
\f0 ),
\f1 idle2
\f0 (or
\f1 idle2.7
\f0 or
\f1 idle
\f0 ),
\f1 pip2
\f0 (or
\f1 pip2.7
\f0 or
\f1 pip
\f0 ), etc. Command names for Python 3 contain a 3 in them,
