suppose the below text is present in the file
1.a=2
2.b=3
3.print(a+b)
if i change the value of b to 5, how to print that in this line this field is changed in python
I think you could use gif for version control of your source code and some library like GitPython to be able to interact from python.
Related
When I try to write something, such as variables, the code is renamed to the file name on the computer.
For example, if I write:
a = 20
f = 15
print(a+f)
then the code file will automatically be renamed to the first line, i.e. "a = 20"
Then, when I try to run the code, the program outputs nothing but "Python" and some incomprehensible words.
What could it be related to?
enter image description here
enter image description here
I installed the latest version of Visual Stuio Code with Python, they are new, so there should be no problems. But this time it went wrong.
After reinstalling the program, the problem remains.
First of all, if there is no special requirement, please do not use Code Runner to run the script, using the official extension Python is a better choice.
In addition, the dot on your file label means that you have not saved the file, you can add the following setting to enable automatic saving in the settings.
"files.autoSave": "afterDelay",
You may have created the file using the following method. File --> New File... --> Python File. At this time, the file has not been named, also not saved. You can see that there is no such file in the resource manager list at this time.
So the file label shows the first line of codes. This is a feature of vscode, you can refer to this link. And because the file has not been saved, there will be problems executing the script.
You can rename the script file directly (F2), or vscode will remind you to name the file when saving. Another way to create a file is to right click and choose New File..., enter filename and end with .py extension.
How can I change the display name of a file using Python?
Details:
Using Mac OS X Mojave
Python 3.7
To be precise, I want to hide the file extension of a file so that textfile.txt is seen as textfile only, without actually removing the file extension.
EDIT:
The display name of a file looks like this:
And I want it to look like this:
What you want is
import os
print(os.path.splitext("/path/to/textfile.txt")[0])
The output will be
/path/to/textfile
EDIT:
from your last edit i figured that what you're looking for is to hide extensions directly in the OS using Python. Well, this is more a task to do modifying your system settings, i don't think that you will be able to change this type of system settings directly from Python.
Just a quick question. I have been using Tkinter in Python in order to create Windows. My code is a bit all over the place when it is one file...
Is it possible to call a window that will be located in a different file?
For example,
Window1.py opens a window, there is a button in that window that should initiate window 2, which is located in Window2.py. Does the code physically have to be in the same file for it to work together?
Yes you can do it:
import os
#executing the python file within the first using this command>>
os.system("python fle_name.py)
The answer to this question is yes.
To link two python files, use:
If you are in python 3, use exec(open(r"example").read())
If you are in python 2, use open(r"example")
-
Note: the python 2 example works both in python 2 and 3
-
They do not need to be in the same file, just simply use their location.
e.g. if I had a program on my desktop, I would use
exec(open(r"C:/Users/MyName/Desktop/program").read())
I have this small program and it needs to create a small .txt file in their 'My Documents' Folder. Here's the code I have for that:
textfile=open('C:\Users\MYNAME\Documents','w')
lines=['stuff goes here']
textfile.writelines(lines)
textfile.close()
The problem is that if other people use it, how do I change the MYNAME to their account name?
Use os.path.expanduser(path), see http://docs.python.org/library/os.path.html
e.g. expanduser('~/filename')
This works on both Unix and Windows, according to the docs.
Edit: forward slash due to Sven's comment.
This works without any extra libs:
import ctypes.wintypes
CSIDL_PERSONAL = 5 # My Documents
SHGFP_TYPE_CURRENT = 0 # Get current, not default value
buf= ctypes.create_unicode_buffer(ctypes.wintypes.MAX_PATH)
ctypes.windll.shell32.SHGetFolderPathW(None, CSIDL_PERSONAL, None, SHGFP_TYPE_CURRENT, buf)
print(buf.value)
Also works if documents location and/or default save location is changed by user.
On Windows, you can use something similar what is shown in the accepted answer to the question: Python, get windows special folders for currently logged-in user.
For the My Documents folder path, useshellcon.CSIDL_PERSONALin the shell.SHGetFolderPath() function call instead of shellcon.CSIDL_MYPICTURES.
So, assuming you have the PyWin32 extensions1 installed, this might work (see caveat in Update section below):
>>> from win32com.shell import shell, shellcon
>>> shell.SHGetFolderPath(0, shellcon.CSIDL_PERSONAL, None, 0)
u'<path\\to\\folder>'
Update: I just read something that said that CSIDL_PERSONAL won't return the correct folder if the user has changed the default save folder in the Win7 Documents library. This is referring to what you can do in library's Properties dialog:
The checkmark means that the path is set as the default save location.
I currently am unware of a way to call the SHLoadLibraryFromKnownFolder() function through PyWin32 (there currently isn't a shell.SHLoadLibraryFromKnownFolder. However it should be possible to do so using the ctypes module.
1Installers for the latest versions of the Python for Windows Extensions are currently available from: http://sourceforge.net/projects/pywin32
Can a python script located in D:\Folder_A\Folder_B\be used to change variables in another python script located in D:\Folder_A\Folder_C\, and then print them out on the console?
NOTE: I'm a beginner in Python, and I'm using v2.7.8.
EDIT: To answer #Rik Verbeek, I created a python file in location A (D:\Folder_A\Folder_B\), and another file at location B (D:\Folder_A\Folder_C\), with both the folders (Folder_B & Folder_C) located in D:\Folder_A\. In the 2nd .py file, I wrote the following:
a = 0
b = 0
Now I want to change these variables from the 1st .py file to 5 and 10 respectively, and print them to the console. Also, these files are not in the Python libraries, but are instead, located in another folder(Folder_A).
To answer #Kasra (and maybe #cdarke), I don't want to import a module, unless it is the only way.
If you have some "global" variables I think is a good idea to have them in a separated module and import that module from each place you need them. This way you only have to do it as cdarke has commented.