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We'll make some references to calibration quality at the end of each review, but suggest that you take these comments with a large grain of salt. While that has a little value, we're more than a bit leery of advising our readers based on purely subjective data. All we can do is make subjective comparisons between how the screens look. This is because, by their nature, we have no objective, absolute way to evaluate the quality of the calibrations the calibrators generate. Our "reviews" of monitor calibration systems aren't reviews in quite the same sense that our camera reviews are. (It's worth noting though, that we found it almost impossible to precisely match CRTs to LCDs with any of the solutions we tried, and the Spyder2PRO ran with the rest of the pack in that respect.) No product is ever perfect, but we found the Spyder2PRO to be better than most and it offers a flexibility found in few other monitor calibration solutions. It consistently did a good job calibrating the monitors we tried it with, seemed less prone to getting lost in the weeds with difficult-to-calibrate monitors, and also provides a good capability for matching multiple monitors to a common standard.
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More resourcesįor macOS 10.Monitor Calibration with the ColorVision Spyder2PROĬolorVision's Spyder 2 Pro product is the one that we eventually settled on for in-house use here at Imaging Resource. You can find a more comprehensive list in this release's " What's New" document. A number of standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by PEP 384.A number of Python modules (_abc, audioop, _bz2, _codecs, _contextvars, _crypt, _functools, _json, _locale, operator, resource, time, _weakref) now use multiphase initialization as defined by PEP 489.A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using PEP 590 vectorcall.BPO 1635741, when Python is initialized multiple times in the same process, it does not leak memory anymore.BPO 39926, Unicode support updated to version 13.0.0.BPO 38692, os.pidfd_open added that allows process management without races and signals.BPO 38379, garbage collection does not block on resurrected objects.PEP 616, String methods to remove prefixes and suffixes.PEP 615, Support for the IANA Time Zone Database in the Standard Library.PEP 614, Relaxing Grammar Restrictions On Decorators.PEP 602, Python adopts a stable annual release cadence.PEP 593, Flexible function and variable annotations.PEP 585, Type Hinting Generics In Standard Collections.PEP 573, Module State Access from C Extension Methods.Some of the new major new features and changes in Python 3.9 are: Major new features of the 3.9 series, compared to 3.8 bpo-43439: Add audit hooks for gc.get_objects(), gc.get_referrers() and gc.get_referents().Code that requires the former vulnerable behavior may set a trust_server_pasv_ipv4_address attribute on their ftplib.FTP instances to True to re-enable it. This prevents a malicious FTP server from using the response to probe IPv4 address and port combinations on the client network. bpo-43285: ftplib no longer trusts the IP address value returned from the server in response to the PASV command by default.Vulnerability reported by David Schwörer.
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Moreover, even source code of Python modules can contain sensitive data like passwords.
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bpo-43631: high-severity CVE-2021-3449 and CVE-2021-3450 were published for OpenSSL, it's been upgraded to 1.1.1k in CI, and macOS and Windows installers.To reiterate, Python 3.9.3 was itself an expedited release due to its security content: Upgrading is highly recommended to all users. Python 3.9.4 is a hotfix release addressing an unintentional ABI incompatibility introduced in Python 3.9.3.
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Python 3.10 is now the latest feature release series of Python 3. Note: The release you're looking at is Python 3.9.4, a bugfix release for the legacy 3.9 series. Release Date: ApThis is the fourth maintenance release of Python 3.9