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how can you Import an os variable into PYTHON and have it update?


how can you Import an os variable into PYTHON and have it update?
» python » how can you Import an os variable into PYTHON and have it update?
By : helmar
Date : November 22 2020, 03:03 PM
To fix this issue Just use a plain text file to store your pyserv data.
First create the pyserv data file. Eg,
code :
#! /usr/bin/env python
import time

def get_data(fname):
    with open(fname, 'r') as f:
        return int(f.read())

while True:
    time.sleep(1)
    pyserv = get_data('vardata')
    print pyserv

pyserv = 1

#! /usr/bin/env python
import time
import vardata

while True:
    time.sleep(1)
    reload(vardata)
    print vardata.pyserv


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How do I import variable packages in Python like using variable variables ($$) in PHP?

How do I import variable packages in Python like using variable variables ($$) in PHP?

By : netang
Date : March 29 2020, 07:55 AM
wish of those help Python doesn't have a feature that's directly equivalent to PHP's "variable variables". To get a "variable variable"'s value (or the value of any other expression) you can use the eval function.
code :
foo = "Hello World"
print eval("foo")

package = "os"
name = "path"

imported = getattr(__import__(package, fromlist=[name]), name)

from os import path as imported
Python using import in a function, import content of variable and not its name?

Python using import in a function, import content of variable and not its name?

By : Mārtiņš D
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Use importlib (backport).
code :
import importlib

def importExtension(extension):
     try:
        importlib.import_module(name)
    except:
        Do stuff
importExtension("blah")
Pandas - Excel Import - Python - Glob, How to place string variable in import

Pandas - Excel Import - Python - Glob, How to place string variable in import

By : user3212197
Date : March 29 2020, 07:55 AM
may help you . The only thing I can identify as a possible problem would be the brackets around yesterday in your for loop. [yesterday]
try this instead
code :
for f in glob.glob('Z:*' + yesterday + '*'):
Python dynamic import - how to import * from module name from variable?

Python dynamic import - how to import * from module name from variable?

By : user554631
Date : March 29 2020, 07:55 AM
it should still fix some issue As discussed here, we can dynamically import a module using string variable. , You can do the following trick:
code :
>>> import importlib
>>> globals().update(importlib.import_module('math').__dict__) 
>>> sin
<built-in function sin>

module = importlib.import_module('math')

globals().update(
    {n: getattr(module, n) for n in module.__all__} if hasattr(module, '__all__') 
    else 
    {k: v for (k, v) in module.__dict__.items() if not k.startswith('_')
})
Python command line import of environment variable required before module import

Python command line import of environment variable required before module import

By : aein
Date : March 29 2020, 07:55 AM
will be helpful for those in need The environment in which you execute your script usually provides a way to set the value of an environment variable. For example, from the POSIX shell, you can simply prefix your Python command with an assignment that only applies to the new process's environment, rather than the current shell environment:
code :
foo_path=/my/dir/path python script.py

export foo_path=/my/dir/path
# Each of the following will see foo_path in its environment.
python script.py
python script.py
python script.py
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