Geez, I've been on summer vacation too long. I don't know where that "latest" came from. It should be 'last'. Unless, of course, you want some other aggregation for the day
stats.day().outTemp.last Last temperature for the day. stats.day().outTemp.avg Average temperature for the day stats.day().outTemp.max Maximum temperature, etc. These aggregation types (last, avg, etc.) are not functions, so they should not require parentheses. -tk On Sun, Jun 25, 2017 at 2:51 PM, Thomas Carlin <thomascarl...@gmail.com> wrote: > That makes sense. I feel like we are making progress. At least the error > keeps changing. Now I am getting a KeyError: 'latest' on the same line. I > get the same thing when I use 'current()' or 'latest' without (). > Traceback below: > > Traceback (most recent call last): > File "/usr/share/weewx/weewx/reportengine.py", line 239, in run > obj.start() > File "/usr/share/weewx/weewx/reportengine.py", line 273, in start > self.run() > File "/usr/share/weewx/weewx/cheetahgenerator.py", line 157, in run > ngen = self.generate(gen_dict[section_name], self.gen_ts) > File "/usr/share/weewx/weewx/cheetahgenerator.py", line 231, in generate > ngen += self.generate(section[subsection], gen_ts) > File "/usr/share/weewx/weewx/cheetahgenerator.py", line 231, in generate > ngen += self.generate(section[subsection], gen_ts) > File "/usr/share/weewx/weewx/cheetahgenerator.py", line 319, in generate > default_binding) > File "/usr/share/weewx/weewx/cheetahgenerator.py", line 371, in > _getSearchList > searchList += obj.get_extension_list(timespan, db_lookup) > File "/usr/share/weewx/user/gdanalyzer.py", line 66, in > get_extension_list > latest = stats.day().outTemp.latest() > File "/usr/share/weewx/weewx/tags.py", line 326, in __getattr__ > return self._do_query(aggregate_type) > File "/usr/share/weewx/weewx/tags.py", line 340, in _do_query > val=val, **self.option_dict) > File "/usr/share/weewx/weewx/wxmanager.py", line 60, in getAggregate > return weewx.manager.DaySummaryManager.getAggregate(self, timespan, > obs_type, aggregateType, **option_dict) > File "/usr/share/weewx/weewx/manager.py", line 1270, in getAggregate > _row = self.getSql(DaySummaryManager.sqlDict[aggregate_type] % > interDict) > KeyError: 'latest' > > > > On Sunday, June 25, 2017 at 2:34:42 PM UTC-6, Tom Keffer wrote: >> >> Sorry. Forgot that "day >> <https://github.com/weewx/weewx/blob/v3.7.1/bin/weewx/tags.py#L69>" is >> actually a function. If Cheetah gets this error it swallows it, then >> silently tries the attribute again, this time as a function, using default >> arguments. You, programming in plain old Python, have no such luxury, so >> you have to call it as a function the first time. I should note that " >> latest >> <https://github.com/weewx/weewx/blob/v3.7.1/bin/weewx/tags.py#L364>" is >> also a function, so it will also have to be called as one. The expression >> becomes >> >> stats.day().outTemp.latest() >> >> >> If you follow the links for day and latest, you can see what optional >> arguments they can take. >> >> -tk >> >> >> >> >> >> On Sun, Jun 25, 2017 at 1:06 PM, Thomas Carlin <thomas...@gmail.com> >> wrote: >> >>> Thanks again Tom, >>> >>> Hopefully the last question for today! >>> >>> I currently have (truncated for brevity) >>> >>> from weewx.cheetahgenerator import SearchList >>> import weewx.tags >>> >>> >>> class GarageDoorAnalyzer(SearchList): >>> def __init__(self, generator): >>> SearchList.__init__(self, generator) >>> >>> >>> def get_extension_list(self, timespan, db_lookup): >>> >>> stats = weewx.tags.TimeBinder( >>> db_lookup, >>> timespan.stop, >>> formatter=self.generator.formatter, >>> converter=self.generator.converter) >>> >>> >>> latest = stats.day.outTemp.latest >>> print latest >>> >>> self.search_list_extension[tag_name] = self. >>> _DoSomethingWithLatest(latest) >>> return[self.search_list_extension] >>> >>> >>> >>> When I run this, i get the following traceback: >>> >>> , line 67, in get_extension_list >>> latest = stats.day.outTemp.latest >>> AttributeError: 'function' object has no attribute 'outTemp' >>> >>> >>> >>> >>> >>> >>> On Sunday, June 25, 2017 at 11:37:55 AM UTC-6, Tom Keffer wrote: >>> >>>> I cut-and-paste from the definition for function >>>> Stats.get_extension_list() >>>> <https://github.com/weewx/weewx/blob/v3.7.1/bin/weewx/cheetahgenerator.py#L537>. >>>> You can see where trend_dict came from there. However, unless you plan >>>> to use something like stats.trend in your search list extension >>>> (unlikely), it, and several other parameters, can be safely left out. A >>>> more minimal assignment for stats would look like: >>>> >>>> stats = weewx.tags.TimeBinder( >>>> db_lookup, >>>> timespan.stop, >>>> formatter=self.generator.formatter, >>>> converter=self.generator.converter) >>>> >>>> As for how often an SLE gets called, that depends on the usage pattern. >>>> Without seeing the exact pattern you are using it's hard to say, but >>>> something I see quite often is Cheetah expressions that look something like >>>> this (this came up today): >>>> >>>> #if $day.UV.has_data >>>> <tr> >>>> <td class="stats_label">UV</td> >>>> #if $current.UV.raw <= 2.4 >>>> <td class="stats_data" style="background-color: >>>> limegreen">$current.UV</td> >>>> #else if $current.UV.raw >= 2.5 and $current.UV.raw <= 5.4 >>>> <td class="stats_data" style="background-color: >>>> yellow">$current.UV</td> >>>> #else if $current.UV.raw >= 5.5 and $current.UV.raw <= 7.4 >>>> <td class="stats_data" style="background-color: >>>> orange">$current.UV</td> >>>> #else if $current.UV.raw >= 7.5 and $current.UV.raw <= 10.4 >>>> <td class="stats_data" style="background-color: red">$current.UV</td> >>>> #else if $current.UV.raw > 10.5 >>>> <td class="stats_data" style="background-color: >>>> violet">$current.UV</td> >>>> #end if >>>> </tr> >>>> #end if >>>> >>>> >>>> This snippet will use the Current SLE up to eight times, just to get >>>> the UV value. If the UV value is not available in the current record, that >>>> means up to 8 SQL queries! A more efficient pattern is: >>>> >>>> #if $day.UV.has_data >>>> #set $current_UV = $current.UV.raw >>>> <tr> >>>> <td class="stats_label">UV</td> >>>> #if $current_UV <= 2.4 >>>> <td class="stats_data" style="background-color: >>>> limegreen">$current.UV</td> >>>> #else if $current_UV >= 2.5 and $current_UV <= 5.4 >>>> <td class="stats_data" style="background-color: >>>> yellow">$current.UV</td> >>>> #else if $current_UV >= 5.5 and $current_UV <= 7.4 >>>> <td class="stats_data" style="background-color: >>>> orange">$current.UV</td> >>>> #else if $current_UV >= 7.5 and $current_UV <= 10.4 >>>> <td class="stats_data" style="background-color: red">$current.UV</td> >>>> #else >>>> <td class="stats_data" style="background-color: >>>> violet">$current.UV</td> >>>> #end if >>>> </tr> >>>> #end if >>>> >>>> -tk >>>> >>>> >>>> >>>> On Sun, Jun 25, 2017 at 9:49 AM, Thomas Carlin <thomas...@gmail.com> >>>> wrote: >>>> >>>>> Thanks Tom, that looks like exactly what I need. Doing some testing >>>>> this morning, I get an error on >>>>> trend=trend_dict, >>>>> >>>>> NameError: global name 'trend_dict' is not defined >>>>> >>>>> Where does this dictionary originate? >>>>> >>>>> Unrelated to the original question, I noticed that my extension runs >>>>> several times (7 i think) for each report generation. It's trivial to >>>>> write a catch in so it only runs once, but i'm curious why this is. Could >>>>> you shed any light on this? >>>>> >>>>> -Thomas >>>>> >>>>> >>>>> On Saturday, June 24, 2017 at 8:25:07 PM UTC-6, Tom Keffer wrote: >>>>>> >>>>>> Not a simple question at all! >>>>>> >>>>>> Generally, yes, you can use something similar to the tags in your >>>>>> code by following the same path through the objects. For example, >>>>>> >>>>>> $day.outTemp.latest >>>>>> >>>>>> can be obtained by using >>>>>> >>>>>> stats = weewx.tags.TimeBinder( >>>>>> db_lookup, >>>>>> timespan.stop, >>>>>> formatter=self.generator.formatter, >>>>>> converter=self.generator.converter, >>>>>> week_start=self.generator.stn_info.week_start, >>>>>> rain_year_start=self.generator.stn_info.rain_year_start, >>>>>> trend=trend_dict, >>>>>> skin_dict=self.generator.skin_dict) >>>>>> >>>>>> latest = stats.day.outTemp.latest >>>>>> >>>>>> This is basically all Cheetah is doing! >>>>>> >>>>>> Hope this helps. >>>>>> >>>>>> -tk >>>>>> >>>>>> >>>>>> On Sat, Jun 24, 2017 at 8:39 AM, Thomas Carlin <thomas...@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> Good morning everyone, >>>>>>> >>>>>>> I have a custom search list extension that I am working on to do >>>>>>> some analysis on my collected data, and I have it to the point that I am >>>>>>> pulling the data out, and can manipulate it, but to do so, I had to >>>>>>> define >>>>>>> my own timespan/binder inside my script. (The historygenerator >>>>>>> extension >>>>>>> does the same thing). >>>>>>> >>>>>>> Is there any way to use the weewx defined 'latest' or 'current' >>>>>>> timespan inside my python extension? Please forgive me if this is a >>>>>>> simple >>>>>>> question, the only programing experience that I have is self-inflicted, >>>>>>> and >>>>>>> far from complete. >>>>>>> >>>>>>> Thank you! >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "weewx-user" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to weewx-user+...@googlegroups.com. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "weewx-user" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to weewx-user+...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to weewx-user+...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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