Can you read the length of an mp3 file in python 3 on windows 10? - python-3.x

I am currently creating a music player in python 3.3 and I have a way of opening the mp3/wav files, namely through using through 'os.startfile()', but, this way of running the files means that if I run more than one, the second cancels the first, and the third cancels the second, and so on and so forth, so I only end up running the last file. So, basically, I would like a way of reading the mp3 file length so that I can use 'time.sleep(SongLength)' between the start of each file.
Thanks in advance.
EDIT:
I forgot to mention, but I would prefer to do this using only pre-installed libraries, as i am hoping to publish this online as a part of a (much) larger program

i've managed to do this Using an external module, as after ages of trying to do it without any, i gave up and used tinytag, as it is easy to install and use.

Nothing you can do without external libraries, as far as I know. Try using pymad.
Use it like this:
import mad
SongFile = mad.MadFile("something.mp3")
SongLength = SongFile.total_time()

Related

HTML5 Audio long buffering before playing

I'm currently making an electron app that needs to play some 40Mbyte audio file from the file system, maybe it's wrong to do this but I found that the only way to play from anywhere in the file system is to convert the file to a dataurl in the background script and then transfer it using icp, after that I simply do
this.sound = new Audio(dataurl);
this.sound.preload = "metadata"
this.sound.play()
(part of a VueJS component hence the this)
I did a profling inside electron and this is what came out:
Note that actually transferring the 40Mbytes audio file doesn't take that long (around 80ms) what is extremely annoying is the "Second Task" which is probably buffering (I have no idea) which last around 950ms, this is way too long and ideally would need it under <220ms
I've already tried changing the preload option to all available options and while I'm using the native html5 audio right now I've also tried howlerjs with similar results (seemed a bit faster tho).
I would guess that loading the file directly might be faster but even after disabling security measures put by electron to block the file:/// it isn't recognized as a valid URI by XHR
Is there a faster way to load the dataurl since all the data is there it just needs to be converted to a buffer or something like that ?
Note: I can not "pre-buffer" every file in advance since there is about 200 of them it just wouldn't make sense in my opinion.
Update:
I found this post Electron - throws Not allowed to load local resource when using showOpenDialog
don't know how I missed it, so I followed step 1 and I now can load files inside electron with the custom protocol, however, nor Audio nor howlerjs is faster, it's actually slower at around 6secs from click to first sound, is it that it needs to buffer the whole file before playing ?
Update 2:
It appears that the 6sec loading time is only effective on the first instance of audio that is created. I do not know why tho. After that the use of two instances (one playing and one pre-buffering) work just fine, however even loading a file that isn't loaded is instantaneous. Seems weird that it only is the firs one.

Is it possible, to re-convert an .exe to python3-Script again?

I'm writing a program with a Login-Window at the beginning.
Since this program is only for my personal use, there is only
one password set, which is implemented in the code. I built an .exe
via pyinstaller and its not possible to read out information out of the
.exe-file. Now i would like to know, if it's possible to re-convert
the .exe into the python3-script to read out the password, or if there is any other way to get information about the script using the .exe-file.
I have not tried yet, but I found in some blog that the following command works.
python pyinstxtractor.py file_to_decompile

Make one time only activation code to python code, and make updates available?

I'm coding a program to do some action with webdriver and Autoit in python, I want to do two things before I start selling my code:
Add onetime activation code to my software on one PC, like to make the program works only on one pc.
Make my program able to receive updates from the internet once I add to the code some more features or correct some others.
is it possible only with Python? or what is the method statement to do it?
On client side you need use hard-disk serial or/and uuid of partition or Operational System timestamp + something to generate serial code .
On server side , you need a API to store hard disk serial to validate if this is a computer valid . And you client on load check if activaction is valid .
The second question i can't answer .
Regarding the second part of your question:
Create a text file with the latest version of your application and put it on your webserver e.g. http://download.example.com/example-app-version.txt to get and read its value later.
On your python code download and read the text (for Python 3+ use 'import urllib.request' and urllib.request.urlretrieve) when your app runs and compare it against the installed version (if statement).
E.g.
if latestVer > installedVer:
#update
else:
#application continues

Getting echofunc.vim to work

I came across echofunc.vim today (from a link in SO). Since I'm rubbish at remembering the order of function parameters, it looked like a very useful tool for me.
But the documentation is a bit lean on installation! And I've not been able to find any supplementary resources on the internet.
I'm trying to get it running on a RHEL box. I've copied the script into ~/.vim/plugin/echofunc.vim however no prompt when I type in a function name followed by '('. I've tried adding
let g:EchoFuncLangsUsed = ["php","java","cpp"]
to my .vimrc - still no prompting.
I'm guessing it needs to read from a dictionary somewhere - although there is a file in /usr/share/vim/vim70/ftplugin/php.vim, this is the RH default and does not include an explicit function list.
I'm not too bothered about getting hints on the functions/methods I've defined - just trying to get hints for the built-in functions. I can see there is a dictionary file available here which appears to provide the resources required for echofunc.vim, I can't see how I set this up.
TIA,
It expects a tags file, the last line of the description describes exactly how to generate it:
ctags -R --fields=+lS .
It works here with PHP but not with JS. Your mileage may vary.
I didn't know about this plugin, thanks for the info.
You should try phpcomplete.vim, it shows a prototype of the current function in a scratchpad. It is PHP only, though.

Open Files Created with BSAVE in QuickBasic?

I have some files that were created using BSAVE in QuickBasic. I'm wondering how I can load/view these files?
I received assistance over at the FreeBasic forums. Its easy to do if you download and install the FreeBasic compiler / IDE. Here is the relevant thread:
http://www.freebasic.net/forum/viewtopic.php?t=12554&postdays=0&postorder=asc&start=0
Essentially, it loads the image using BLOAD like one normally would and then BSAVEs it as a BMP. I suppose it would be pretty easy to create an app. that did this by just prompting for source and output files...
I would try installing pcpaint (free) http://www.shdon.com/software/pcpaint
Change the extension to .PIC and try to open it. Apparently this program used bsave to save images with the extention .pic.
Hope this works!

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