Tai Chi 5 Minutes A Day Module 02
Prospero Barela
Although this module is always available,not all functions are available on all platforms. Most of the functionsdefined in this module call platform C library functions with the same name. Itmay sometimes be helpful to consult the platform documentation, because thesemantics of these functions varies among platforms.
The term seconds since the epoch refers to the total numberof elapsed seconds since the epoch, typically excludingleap seconds. Leap seconds are excluded from this total on allPOSIX-compliant platforms.
The functions in this module may not handle dates and times before the epoch orfar in the future. The cut-off point in the future is determined by the Clibrary; for 32-bit systems, it is typically in 2038.
DST is Daylight Saving Time, an adjustment of the timezone by (usually) onehour during part of the year. DST rules are magic (determined by local law) andcan change from year to year. The C library has a table containing the localrules (often it is read from a system file for flexibility) and is the onlysource of True Wisdom in this respect.
Convert a time expressed in seconds since the epoch to a struct_time inUTC in which the dst flag is always zero. If secs is not provided orNone, the current time as returned by time() is used. Fractionsof a second are ignored. See above for a description of thestruct_time object. See calendar.timegm() for the inverse of thisfunction.
This is the inverse function of localtime(). Its argument is thestruct_time or full 9-tuple (since the dst flag is needed; use -1as the dst flag if it is unknown) which expresses the time in local time, notUTC. It returns a floating-point number, for compatibility with time().If the input value cannot be represented as a valid time, eitherOverflowError or ValueError will be raised (which depends onwhether the invalid value is caught by Python or the underlying C libraries).The earliest date for which it can generate a time is platform-dependent.
Return the value (in fractional seconds) of a monotonic clock, i.e. a clockthat cannot go backwards. The clock is not affected by system clock updates.The reference point of the returned value is undefined, so that only thedifference between the results of two calls is valid.
On Windows, if secs is zero, the thread relinquishes the remainder of itstime slice to any other thread that is ready to run. If there are no otherthreads ready to run, the function returns immediately, and the threadcontinues execution. On Windows 8.1 and newer the implementation usesa high-resolution timerwhich provides resolution of 100 nanoseconds. If secs is zero, Sleep(0) is used.
Changed in version 3.5: The function now sleeps at least secs even if the sleep is interruptedby a signal, except if the signal handler raises an exception (seePEP 475 for the rationale).
Convert a tuple or struct_time representing a time as returned bygmtime() or localtime() to a string as specified by the formatargument. If t is not provided, the current time as returned bylocaltime() is used. format must be a string. ValueError israised if any field in t is outside of the allowed range.
The following directives can be embedded in the format string. They are shownwithout the optional field width and precision specification, and are replacedby the indicated characters in the strftime() result:
Time zone offset indicating a positive ornegative time difference from UTC/GMT of theform +HHMM or -HHMM, where H represents decimalhour digits and M represents decimal minutedigits [-23:59, +23:59]. [1]
Additional directives may be supported on certain platforms, but only theones listed here have a meaning standardized by ANSI C. To see the full setof format codes supported on your platform, consult the strftime(3)documentation.
On some platforms, an optional field width and precision specification canimmediately follow the initial '%' of a directive in the following order;this is also not portable. The field width is normally 2 except for %j whereit is 3.
Support for the %Z directive is based on the values contained in tznameand whether daylight is true. Because of this, it is platform-specificexcept for recognizing UTC and GMT which are always known (and are considered tobe non-daylight savings timezones).
Only the directives specified in the documentation are supported. Becausestrftime() is implemented per platform it can sometimes offer moredirectives than those listed. But strptime() is independent of any platformand thus does not necessarily support all directives available that are notdocumented as supported.
The type of the time value sequence returned by gmtime(),localtime(), and strptime(). It is an object with a namedtuple interface: values can be accessed by index and by attribute name. Thefollowing values are present:
In calls to mktime(), tm_isdst may be set to 1 when daylightsavings time is in effect, and 0 when it is not. A value of -1 indicates thatthis is not known, and will usually result in the correct state being filled in.
Return the time in seconds since the epoch as a floating-pointnumber. The handling of leap seconds is platform dependent.On Windows and most Unix systems, the leap seconds are not counted towardsthe time in seconds since the epoch. This is commonly referred to as Unixtime.
Note that even though the time is always returned as a floating-pointnumber, not all systems provide time with a better precision than 1 second.While this function normally returns non-decreasing values, it can return alower value than a previous call if the system clock has been set backbetween the two calls.
Reset the time conversion rules used by the library routines. The environmentvariable TZ specifies how this is done. It will also set the variablestzname (from the TZ environment variable), timezone (non-DSTseconds West of UTC), altzone (DST seconds west of UTC) and daylight(to 0 if this timezone does not have any daylight saving time rules, or tononzero if there is a time, past, present or future when daylight saving timeapplies).
This allows applications to get a suspend-aware monotonic clock withouthaving to deal with the complications of CLOCK_REALTIME, which mayhave discontinuities if the time is changed using settimeofday() orsimilar.
The offset of the local DST timezone, in seconds west of UTC, if one is defined.This is negative if the local DST timezone is east of UTC (as in Western Europe,including the UK). Only use this if daylight is nonzero. See note below.
A tuple of two strings: the first is the name of the local non-DST timezone, thesecond is the name of the local DST timezone. If no DST timezone is defined,the second string should not be used. See note below.
For the above Timezone constants (altzone, daylight, timezone,and tzname), the value is determined by the timezone rules in effectat module load time or the last time tzset() is called and may be incorrectfor times in the past. It is recommended to use the tm_gmtoff andtm_zone results from localtime() to obtain timezone information.
This module is part of ansible-core and included in all Ansibleinstallations. In most cases, you can use the shortmodule namepause even without specifying the collections keyword.However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible.builtin.pause for easy linking to themodule documentation and to avoid conflicting with other collections that may havethe same module name.
You can use ctrl+c if you wish to advance a pause earlier than it is set to expire or if you need to abort a playbook run entirely. To continue early press ctrl+c and then c. To abort a playbook press ctrl+c and then a.
The pause module integrates into async/parallelized playbooks without any special considerations (see Rolling Updates). When using pauses with the serial playbook parameter (as in rolling updates) you are only prompted once for the current group of hosts.
00:12 - Writing unit tests. ?
00:24 - Create the first go file.
00:40 - Creating the Go go.mod file. When creating the go.mode file, note the command is go mod init [repopath] where repopath is the actual URI to the repo. The go.mod file that is generated would look like this.
00:56 - Enabling Go mod integration for Goland IDE. This dialog has an option to turn off the proxy or go direct to repo bypassing the proxy. For more details on the Go proxy, check out goproxy.io and the Go docs for more details.
01:09 - Instead of TDD, first I cover a simple function implementation. Note the casing is very important in setting up a test in Go. The test function needs to be public, thus capitalized, and the function needs accessible, thus also capitalized. The function in the awesomeLib.go file, just to have a function that would return some value, looks like this.
01:30 - Creating the test file, awesomeLib_test.go, then creating the test. In this I also show some of the features of the Goland IDE that extracts and offers the function names of a module prefaced with Test and other naming that provides they perform a test, performance, or related testing functionality.
02:26 - Running the standard go test to execute the test. To run tests for all files within this module, such as if we've added multiple directories and other files, would be go test ./....
02:36 - Using Goland to run the tests with singular or multiple tests being executed. With Goland there are other capabilities to show test coverage, what percentage of functionality is covered by tests, and other various code metrics around testing, performance, and other telemetry.
For JavaScript, Go, Python, Terraform, and more infrastructure, web dev, and coding in general I stream regularly on Twitch at , post the VOD's to YouTube along with entirely new tech and metal content at
Because the digital SAT is adaptive, the same knowledge and skills can be accurately measured faster. The first module of each section contains a broad mix of easy, medium, and hard questions. Based on how you do on the first module, the second module of questions will either be more difficult or less difficult. Either way, the module will always have the same number of questions.
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