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1{\rtf1\ansi\ansicpg1252\cocoartf1561\cocoasubrtf400
2{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fmodern\fcharset0 CourierNewPSMT;}
3{\colortbl;\red255\green255\blue255;}
4{\*\expandedcolortbl;;}
5\margl1440\margr1440\vieww13380\viewh14600\viewkind0
6\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
7
8\f0\fs24 \cf0 This package will install Python $FULL_VERSION for macOS $MACOSX_DEPLOYMENT_TARGET for the following architecture(s): $ARCHITECTURES.\
9\
10\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
11
12\b \cf0 \ul \ulc0 Which installer variant should I use?
13\b0 \ulnone \
14\
15For Python.3.7, python.org currently provides two installer variants for download: one that installs a
16\i 64-bit-only
17\i0 Python capable of running on
18\i macOS 10.9 (Mavericks)
19\i0  or later; and one that installs a
20\i 64-bit/32-bit Intel
21\i0  Python capable of running on
22\i macOS 10.6 (Snow Leopard)
23\i0  or later.  (This ReadMe was installed with the
24\i $MACOSX_DEPLOYMENT_TARGET
25\i0  variant.)  If you are running on macOS 10.9 or later and if you have no need for compatibility with older systems, use the 10.9 variant.  Use the 10.6 variant if you are running on macOS 10.6 through 10.8 or if you want to produce standalone applications that can run on systems from 10.6.  The Pythons installed by these installers are built with private copies of some third-party libraries not included with or newer than those in macOS itself.  The list of these libraries varies by installer variant and is included at the end of the License.rtf file.
26\b \ul \
27\
28Certificate verification and OpenSSL\
29
30\b0 \ulnone \
31This variant of Python 3.7 includes its own private copy of OpenSSL 1.1.0.  The deprecated Apple-supplied OpenSSL libraries are no longer used.  This means that the trust certificates in system and user keychains managed by the
32\i Keychain Access
33\i0 application and the
34\i security
35\i0  command line utility are no longer used as defaults by the Python
36\f1 ssl
37\f0  module.  A sample command script is included in
38\f1 /Applications/Python 3.7
39\f0  to install a curated bundle of default root certificates from the third-party
40\f1 certifi
41\f0  package ({\field{\*\fldinst{HYPERLINK "https://pypi.org/project/certifi/"}}{\fldrslt https://pypi.org/project/certifi/}}).  If you choose to use
42\f1 certifi
43\f0 , you should consider subscribing to the{\field{\*\fldinst{HYPERLINK "https://certifi.io/en/latest/"}}{\fldrslt  project's email update service}} to be notified when the certificate bundle is updated.\
44\
45The bundled
46\f1 pip
47\f0  included with this installer has its own default certificate store for verifying download connections.\
48\
49
50\b \ul Using IDLE or other Tk applications
51\b0 \ulnone \
52\
53Both installer variants now come with their own private version of Tcl/Tk 8.6. They no longer use system-supplied or third-party supplied versions of Tcl/Tk as in previous releases.\
54
55\b \ul \
56Other changes\
57
58\b0 \ulnone \
59For other changes in this release, see the
60\i What's new
61\i0  section in the {\field{\*\fldinst{HYPERLINK "https://www.python.org/doc/"}}{\fldrslt Documentation Set}} for this release and its
62\i Release Notes
63\i0  link at {\field{\*\fldinst{HYPERLINK "https://www.python.org/downloads/"}}{\fldrslt https://www.python.org/downloads/}}.\
64
65\b \ul \
66Python 3 and Python 2 Co-existence\
67
68\b0 \ulnone \
69Python.org Python $VERSION and 2.7.x versions can both be installed on your system and will not conflict. Command names for Python 3 contain a 3 in them,
70\f1 python3
71\f0  (or
72\f1  python$VERSION
73\f0 ),
74\f1 idle3
75\f0  (or i
76\f1 dle$VERSION
77\f0 ),
78\f1 pip3
79\f0  (or
80\f1 pip$VERSION
81\f0 ), etc.  Python 2.7 command names contain a 2 or no digit:
82\f1 python2
83\f0  (or
84\f1 python2.7
85\f0  or
86\f1 python
87\f0 ),
88\f1 idle2
89\f0  (or
90\f1 idle2.7
91\f0  or
92\f1 idle
93\f0 ), etc.\
94}