Re: [Tutor] What is Tuple in the typing module?

Thank you, Peter and Alan. Both very helpful. I was able to figure it out. Cheers! On Sat, Aug 17, 2019 at 5:45 AM Alan Gauld via Tutor wrote: > On 17/08/2019 00:46, C W wrote: > > The formatting seems messed up I'll try to straighten it out. > I hope I get it right! > > Cav

[Tutor] What is Tuple in the typing module?

Hi everyone, What exactly is Tuple in the typing module? What does it do? This is the definition from its website. https://docs.python.org/3/library/typing.html "A type alias is defined by assigning the type to the alias" I have no idea what that means. Here's the example from the

Re: [Tutor] How to convert string to date time format?

Thanks a lot Steven. The %f is what I was missing. The "-08:00" is the UTC timezone, which is California, USA, which I believe is %z. Thanks! On Sat, Jul 20, 2019 at 7:50 PM Steven D'Aprano wrote: > On Fri, Jul 19, 2019 at 10:44:36PM -0400, C W wrote: > > Hello all, > &g

[Tutor] How to convert string to date time format?

Hello all, I have a date time string that looks like the following. 02015-07-01 00:01:44.538420-08:00 12015-07-01 00:27:58.717530-08:00 22017-07-01 07:07:48.391376-08:00 I have tried the following two different methods, both did not work. Method one: pandas import pandas as pd stamp

Re: [Tutor] What's the difference between calling a method with parenthesis vs. without it?

Thank you all. I'm relatively new to OOP, I think that's where the problem is. It's different from C or any C alike language. I'm still figuring out what's under the hood with OOP. Thanks! On Mon, Jun 18, 2018 at 8:26 PM, Steven D'Aprano wrote: > On Mon, Jun 18, 2018 at 08:50:24AM -0600, Mats

[Tutor] What's the difference between calling a method with parenthesis vs. without it?

Dear Python experts, I never figured out when to call a method with parenthesis, when is it not? It seems inconsistent. For example, If I do > data.isnull() numberair_pressure_9amair_temp_9amavg_wind_direction_9amavg_wind_speed_9am max_wind_direction_9ammax_wind_speed_9amrain_accumulation_9am

Re: [Tutor] In matplotlib, why are there axes classes vs. axes API? Why not list them under one documentation?

I have found the matplotlib list. Cheers! On Sat, Jun 16, 2018 at 7:13 PM, Alan Gauld via Tutor wrote: > On 16/06/18 05:49, Mike C wrote: > > I can only compare to the R language I've used. If there is an issue, > > say a function freezes at startup, one user brings it up to the list,> > when

Re: [Tutor] In matplotlib, why are there axes classes vs. axes API? Why not list them under one documentation?

Somehow I missed your first post, Mats. I certainly agree with you earlier point. After searching, I see there is a Matplotlib list. I will direct questions to there, hopefully that will bring some attention. Thanks! On Sat, Jun 16, 2018 at 11:52 AM, Mats Wichmann wrote: > On 06/15/2018 10:49

Re: [Tutor] In matplotlib, why are there axes classes vs. axes API? Why not list them under one documentation?

Python's growing popularity, hasn't anyone brought this up before me? Was there a plan? Thanks! On Thu, Jun 14, 2018 at 9:39 PM, Steven D'Aprano wrote: > On Thu, Jun 14, 2018 at 12:31:44PM -0400, C W wrote: > > Hello everyone, > > > > I'm working on matplotlib, could someone e

[Tutor] In matplotlib, why are there axes classes vs. axes API? Why not list them under one documentation?

Hello everyone, I'm working on matplotlib, could someone explain the difference between these two? Axes class: https://matplotlib.org/api/axes_api.html#matplotlib.axes.Axes Axes and tick API: https://matplotlib.org/api/axis_api.html I began at reading axes class, but discovered axes API by

Re: [Tutor] What exactly does the three dots do? Why such as thing?

i, Aug 11, 2017 at 07:57:09AM -0600, Mats Wichmann wrote: > > On 08/10/2017 05:23 PM, Alan Gauld via Tutor wrote: > > > On 10/08/17 14:39, C W wrote: > > > > > >> I suppose it's just a place holder, though I don't know when I would > use it > > >&

Re: [Tutor] Does matplotlib.finance still work?

color='red', lw=2) Thank you very much! On Fri, Aug 25, 2017 at 1:01 PM, Alan Gauld via Tutor <tutor@python.org> wrote: > On 25/08/17 15:19, C W wrote: > > I did not mean to leave out the error message, it was very long. > > That just means it has a lot of informati

Re: [Tutor] Does matplotlib.finance still work?

1320 raise URLError(err) 1321 r = h.getresponse() 1322 except: URLError: On Fri, Aug 25, 2017 at 6:01 AM, Sydney Shall <s.sh...@virginmedia.com> wrote: > On 24/08/2017 18:46, Alan Gauld via Tutor wrote: > >> On 24/08/17 14:51, C W wrote: >> >> I have the

[Tutor] Does matplotlib.finance still work?

Hello all, I have the following code, I get an error at the first line. from matplotlib.finance import quotes_historical_yahoo_ochl from datetime import date import pandas as pd today = date.today() start = date(today.year-1, today.month, today.day) quotes = quotes_historical_yahoo_ochl('APX',

Re: [Tutor] What exactly does the three dots do? Why such as thing?

ipedia.org/wiki/Literal_(computer_programming) I suppose it's just a place holder, though I don't know when I would use it in my every day life. On Thu, Aug 10, 2017 at 8:47 AM, Steven D'Aprano <st...@pearwood.info> wrote: > On Wed, Aug 09, 2017 at 12:06:37PM -0400, C W wrote: >

Re: [Tutor] If tuple cannot be sorted, then why sorted() on a tuple is fine?

ferent, but close enough to mistake them as the same thing. Thanks! On Wed, Aug 2, 2017 at 9:32 PM, C W <tmrs...@gmail.com> wrote: > As pointed out by someone else, ?sorted > sorted(iterable, key=None, reverse=False) > > It seems like the only requirement is iterable. I guess

[Tutor] What exactly does the three dots do? Why such as thing?

Dear Python experts, What exactly does the three dots do? > aList = ... > type(pList) ellipsis It's an ellipsis, a spot holder to later. But what data type is it: vector, matrix? In every other language, you initialize a variable you want to use. What's the point of ellipsis? Thanks!

Re: [Tutor] If tuple cannot be sorted, then why sorted() on a tuple is fine?

PM, Alan Gauld via Tutor <tutor@python.org> wrote: > On 02/08/17 20:01, C W wrote: > > > I am a little confused about why Tuple can be sorted. > > > > Suppose I have the following, > > > >> aTuple = (9, 3, 7, 5) > >> sorted(aTuple) > > [3

[Tutor] If tuple cannot be sorted, then why sorted() on a tuple is fine?

Dear list, I am a little confused about why Tuple can be sorted. Suppose I have the following, > aTuple = (9, 3, 7, 5) > sorted(aTuple) [3, 5, 7, 9] Why is it ok to sort a the class tuple? If it is invariant by nature, then wouldn't applying a function on it yield an error? Thanks!

Re: [Tutor] What's the difference between sort(aList) and aList.sorted()

0:03:59PM -0400, C W wrote: > > Thank you very much, all! > > > > One other question: how do you look up a method? > > Any of these will work: > > help(list.sort) > > help([].sort) > > alist = [1, 2, 3, 99] > help(alist.sort) > > > > >

Re: [Tutor] What's the difference between sort(aList) and aList.sorted()

er aList.sort(), I was fine with it for years. I suppose sort(aList) is more of a data science thing. Thanks to all! On Wed, Jul 26, 2017 at 8:21 PM, Steven D'Aprano <st...@pearwood.info> wrote: > On Wed, Jul 26, 2017 at 02:40:17PM -0400, C W wrote: > > > sorted(aList) > &

[Tutor] What's the difference between sort(aList) and aList.sorted()

Dear Python experts, I suppose I have the following Python code: aList = [3, 5, 2, 4] sorted(aList) > [2, 3, 4, 5] aList.sort() aList > [2, 3, 4, 5] My understanding of each is: 1) function(variable) is manipulating a vector, I can do bList = sorted(aList) 2) object.method() is permanently

Re: [Tutor] Coming from R, what's a good IDE editor? I've tried PyCharm and Spyder

I come back to report that after trying it myself. Rodeo is the winner! Spyder came close. There's even a post on moving the layouts around just like RStudio. http://discuss.yhat.com/t/move-around-the-layout/43 I hope they implement that soon. Thanks everyone for your advice! On Thu, Jun 8,

Re: [Tutor] Coming from R, what's a good IDE editor? I've tried PyCharm and Spyder

Indeed, just installed it. Rodeo is a very close to RStudio. My review: It looks like Rodeo is still in earlier development stage, despite look alike, many features in RStudio don't exist in Rodeo. It lacks a keyboard configuration. Cmd + Enter combo works! It runs the current line of code, this

[Tutor] Coming from R, what's a good IDE editor? I've tried PyCharm and Spyder

Dear Python list, I am an R user learning Python. What is a good editor? 1) Pycharm PyCharm evaluates the entire script, I just want to change a few lines in the script. For example, import matplotlib.pyplot as plt import numpy as np x = np.arange(0, 1,0.1) y = np.sin(2 * np.pi * x)

Re: [Tutor] Counting a string backwards

Wow, that's the best explanation I've seen so far, now it's gonna stick with me! Thank you! On Sun, May 28, 2017 at 10:00 PM, Steven D'Aprano <st...@pearwood.info> wrote: > On Sun, May 28, 2017 at 01:58:22PM -0400, C W wrote: > > Dear Python list, > > > > I am h

Re: [Tutor] Counting a string backwards

Hi Alan Thank you very much, I got it. So in this case, there is no need to specify where it ends. In fact, even if I wanted to specify the ending, I can't! Thank you! On Sun, May 28, 2017 at 7:19 PM, Alan Gauld via Tutor <tutor@python.org> wrote: > On 28/05/17 18:58, C W wrote:

[Tutor] Counting a string backwards

Dear Python list, I am having trouble understanding the following. If I do case 1, great = "Machine learning is awesome!" > print(great[-1]) > ! Now if I do case 2, > print(great[-3:-1]) > me Where did the exclamation mark go in case 2? I was told the count begins at zero, that's true going