I've been stuck on C++ for a bit, so I decided to continue my python classes (In which I'm currently working with the Nikkiepy library) and I'm trying to figure out how to make a file. This is my current code:
import nikkiepy.files as npyf
npyf.mkfile("coakey", "./data", ".cde")
for some reason it keeps asking for a folder
You're using "Coakey" as the folder, you should instead do
import nikkiepy.files as npyf
npyf.mkfile(path="./", name="coakey", extension="cde")
Also, leave the "." out of the extension, because that gets added automatically
Related
I'm trying to use multiple files in my programing and I ran into a problem.
I have two files: main.py, nu.py
The main file is:
import numpy
import nu
def numarray():
numpy.array(some code goes here)
nu.createarray()
The nu file is:
def createarray():
numpy.array(some code goes here)
When I run main I get an error:
File "D:\python\nu.py", line 2, in createarray
numpy.array(some code goes here)
NameError: name 'numpy' is not defined
numpy is just an exaple, I'm using about six imports.
As far as I see it, I have to import all moduls on all files, but it creating a problem where certain modules can't be loaded twice, it just hang.
What I'm doing wrong and how can I properly import functions from another file while using imported modules from the main file?
I hope i explain it well.
thanks for helping!
I have years in python and importing from other files is still a headache..
The problmen here is that you are not importing numpy in "nu.py".
But as you say sometimes it's a little annoying have to import al libraries in all files.
The last thing is, How do you get the error a module cannot be imported twice? can you give me an example?
In each separate python script if you are using a module within you need to import it to access. So you will need to 'import numpy' in your nu.py script like below
If possible try keeping the use of a module within a script so you dont have import the same multiple times, although this wont always be appropriate
I am trying to learn Python scripting for FreeCad.
In the folder "C:/p/Freecad/0.18/ZillmannTest" I have
2 files:
Macro1.py and
FCadHelper.py
The content of Macro1.py is as follows:
############
import sys
sys.path.append("C:/p/Freecad/0.18/ZillmannTest")
from FCadHelper import *
helper = FCadHelper()
helper.startDocument('TestKopf')
helper.addBody('TestKopfBody')
helper.addSketch('TestSketch')
####################
I can start Macro1.py from FreeCad Macro menu
But when I have an error in FCadHelper.py and correct it,
FreeCad does not load the changed file FCadHelper.py,
it keeps using the old (chached ?) version of the file.
To use the changed file I have to terminate FreeCad and
start it again. Which is annoying.
Is there a way to stop FreeCad from caching this file?
As I plan to create a Class library of similar files,
the problem will then be even greater than now.
Kind regards
You can try importlib.reload:
https://docs.python.org/3/library/importlib.html#importlib.reload
It is a little tricky sometimes, but it will work in your case.
I was making a exercise generator algorithm for my friend, but I stumbled across a problem. It is a python program, and I wanted to generate a folder in a directory that was above the program's location (like, the python file is in 'C:\Documents\foo' and the folder should be created in 'C:\Documents') so that it could then store the file the program created. Is there a way to do this or should I try something else?
Use the path argument of the os.mkdir() function.
Getting the current script directory is not a built-in feature, but there are multiple hacks suggested here.
Once you get the current script directory, you can build a path based off of that.
Not super familiar with Python in a Windows environment, but this should be easily do-able. Here is a similar question that might be worth looking at: How to check if a directory exists and create it if necessary?
Looks like the pathlib module might do what you are looking for.
from pathlib import Path
path = Path("/my/directory/filename.txt")
try:
if not path.parent.exists():
path.parent.mkdir(parents=True)
except OSError:
# handle error; you can also catch specific errors like
# FileExistsError and so on.
Appears to work on Win 7 with Python 2.7.8 as described:
import os.path
createDir = '\\'.join((os.path.abspath(os.path.join(os.getcwd(), os.pardir)), 'Foo'))
if not os.path.exists(createDir):
os.makedirs(createDir)
I'm trying to copy an entire directory from one locations to another via python every 7 days to essentially make a backup...
The backup folder/tree folder may or may not exist so it needs to create the folder if it doesn't exist, that's why I assumed distutils is better suited over shutil
Note Is it better for me to use batch or some other language for the said job?
The following code:
import distutils
distutils.dir_util.copy_tree("C:\Users\A\Desktop\Test", "C:\Users\A\Desktop\test_new", preserve_mode=1, preserve_times=1, preserve_symlinks=0, update=1, verbose=0, dry_run=0)
Returns:
Traceback (most recent call last):
File "C:\Users\A\Desktop\test.py", line 2, in <module>
distutils.dir_util.copy_tree("C:\Users\A\Desktop\test", "C:\Users\A\Desktop\test2", preserve_mode=1, preserve_times=1, preserve_symlinks=0, update=1, verbose=0, dry_run=0)
AttributeError: 'module' object has no attribute 'dir_util'
What am I doing wrong?
Thanks in advance
- Hyflex
You need to import dir_util specifically to access it's functions:
from distutils import dir_util
If there are other modules in that package that you need, add them to the line, separated by commas. Only import the modules you need.
For Unix/Linux, I suggest 'rsync'.
For windows: xcopy
I've been attempting essentially the same thing to back up what I write on a plethora of virtual machines.
I ran into the same problem you did with distutils. From what I can tell, the Python community is using the distutils module to start standardizing how new modules interface with Python. I think they're still in the thick of it though as everything I've seen relating to it seems more complicated, not less complicated. Hopefully, I'm just seeing all the crazy that happens in the middle of a big change.
But I did figure out how to get it working. To use distutil.dir_util.copytree(),
>>> from distutils import dir_util
>>> dir_util.copy_tree("/home/user/backing_up/temp", "/home/user/backing_up/other")
['/home/user/backing_up/other/stuff.txt'] # Return value indicating success
If you feel like it's worthwhile, you can import distutils.core and make the longer call to distutils.dir_util.copy_tree().
>>> import distutils.core
>>> distutils.dir_util.copy_tree("/home/user/backing_up/temp", "/home/user/backing_up/other")
['/home/user/backing_up/other/stuff.txt'] # Return value indicating success
(I know, I know, there are subtle differences between "import module.submodule" and "from module import submodule" but that's not the intent of the question and so long as you're importing the correct stuff and calling the functions appropriately, it doesn't make a difference.)
Like you, I also explicitly stated that I wanted the default for preserve_mode and preserve_times, but I didn't touch the other variables. Everything worked as expected once I imported and called the function the way it wanted me to.
Now that my back up script works, I realize I should have written it in Bash since I plan on having it run whenever the machine goes to a specific runlevel. I'm using a wrapper instead now, even if I should just re-write it.
I am trying to figure out how to use Python in Maya. I wanted to create a shelf in Maya and when I click that shelf, it will execute a file containing python code.
First thing, I figured out that we can't simply source python script. I followed this tutorial, so now I have a function psource(). In my shelf, I can just call psource("myPythonScript")
My problem is I have to somehow register psource() when Maya first loaded.
Any idea how to do this?
I suggest that you import the Python module with your button before calling the function. Assuming your script is in maya/scripts/tep.py, your button would do the following:
import tep
tep.psource()
If you wanted to modify the script and keep running the fresh version every time you hit the button, do this:
import tep
reload(tep)
tep.psource()
And if you want your module to load on Maya startup, create a file called userSetup.py in your maya/scripts directory and have it do this:
import tep
Then, your button can simply just:
tep.psource()
Or...
reload(tep)
tep.psource()
As part of the Maya startup sequence, it'll execute a file called userSetup.py for you. Within that file you can stick in standard python code to set up your environment, etc.
docs: http://download.autodesk.com/global/docs/maya2013/en_us/index.html?url=files/Python_Python_in_Maya.htm,topicNumber=d30e725143
That's the 2013 docco, but it's valid in 2011 and 2012 too. I expect it to be correct going back further as well, but I'm not running anything older here
For an example btw, my userSetup.py file looks like this:
import sys
# import a separate pyscript dir - we keep the standard scriptdir for MEL
sys.path.append(r'C:/Users/tanantish/Documents/maya/2012-x64/pyscripts')
# odds on i'm going to want PyMEL loaded by default
# and we are going to try distinguish it from the old maya.cmds
# since the two since they're similar, but not the same.
# from pymel.core import *
import pymel.core as pm
# and we might as well get maya.cmds in for testing..
import maya.cmds as mc
# import local toolpack
import tantools
(edited to caps out userSetup.py as per #jdi's comment)
Which version of Maya are you running? If later than 8.5, Maya has python built in. Any python scripts you put in your local Maya script directory gets automatically sourced. You can inside the script editor source and run python scripts.
To automatically run:
Create a userSetup.mel file in myDocs\maya\mayaVersion\scripts
Inside the userSetup, use this syntax to import and run scripts:
python("from package import module");
python("module.method(\"passedVar1\", \"passedVar2\")");
Hope that helps
P.S Same syntax applies for shelf buttons. Just have to make sure that you have your python path set for Maya so that your code can be found. The local script directory is already included.....
I like to use
exec(open('c:\whatever\whatever\scriptname.py'))
See if that works for you! :)