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Python: Bizarre issue with imported function within While Loop


Python: Bizarre issue with imported function within While Loop

By : Luis Omar Sotelo Per
Date : November 18 2020, 03:01 PM
like below fixes the issue Adding a break statement after your recordSystem(recTime) should do the trick! I also fixed the indentation, and removed an extra ( from the code:
code :
from RECORD import recordSystem

recTime = 30 #Amount of time(seconds) I want to record the audio input

while True: #I want to keep this active while system is running

    #Standard raspberry Pi input sensors. 
    if GPIO.input(LedPin4) == GPIO.LOW and GPIO.input(LedPin5) == GPIO.HIGH:  
        recordSystem(recTime) #when condition is met run the code. 
        break


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Bizarre performance issue: Common Table Expressions in inline User-Defined Function

Bizarre performance issue: Common Table Expressions in inline User-Defined Function


By : David
Date : March 29 2020, 07:55 AM
hope this fix your issue Here's a brain-twister for the SQL guys - can anyone think of a reason why the first of these functions performs fine, and the second one runs dog-slow? , Haha, try this:
code :
IF OBJECT_ID('_HappyFunction' ) IS NOT NULL DROP FUNCTION _HappyFunction
IF OBJECT_ID('_SadFunction'   ) IS NOT NULL DROP FUNCTION _SadFunction
IF TYPE_ID  ('_UniqueIntTable') IS NOT NULL DROP TYPE _UniqueIntTable
GO

CREATE TYPE _UniqueIntTable AS TABLE (Value int NOT NULL PRIMARY KEY)
GO

CREATE FUNCTION _HappyFunction (@IDs _UniqueIntTable READONLY)
RETURNS TABLE AS RETURN
  SELECT Value FROM @IDs
GO

CREATE FUNCTION _SadFunction (@IDs _UniqueIntTable READONLY)
RETURNS TABLE AS RETURN 
  WITH CTE AS (SELECT Value FROM @IDs)
  SELECT Value FROM CTE
GO

-- this will return an empty record set
DECLARE @IDs _UniqueIntTable 
SELECT * FROM _HappyFunction(@IDs)
GO

-- this will hang
DECLARE @IDs _UniqueIntTable 
SELECT * FROM _SadFunction(@IDs)
GO
Bizarre Python Import Issue - Relative Imports of Builtins?

Bizarre Python Import Issue - Relative Imports of Builtins?


By : Fenrir
Date : March 29 2020, 07:55 AM
I wish did fix the issue. The cache includes misses as well as hits. TestFolder.os==None just means that python looked for a package-relative module called "os", didn't find it, and proceeded down the line. It caches the package absolute name "TestFolder.os" because that's what other modules would call it. It sets the value to None so that other module's imports don't have to check the file system again.
Bizarre issue with pandas' .groupby function, when function applied to rows

Bizarre issue with pandas' .groupby function, when function applied to rows


By : Roberto Hernandez
Date : March 29 2020, 07:55 AM
like below fixes the issue I have a set of CSV data that is 4203x37 which I reshape to 50436x4 in order to find the Euclidean distance between 12 sets of 3D points, recorded at each time-step. This does not work for my actual data, but bizarrely enough when I recreated the data with random numbers it works, code follows... , If you run the following code
code :
df_f_2_norm.Time.value_counts()
1.333    492
1.383    492
1.317    492
1.400    492
1.467    492
1.450    492
1.483    492
1.417    492
1.500    492
1.367    492
1.350    492
1.433    492
1.533    480
1.517    480
1.550    468
...
4.800    12
4.600    12
4.750    12
4.833    12
4.667    12
4.700    12
4.650    12
4.683    12
4.633    12
4.617    12
4.817    12
4.583    12
4.733    12
4.767    12
4.783    12
Length: 272, dtype: int64
import pandas as pd
from scipy.spatial.distance import pdist, squareform

df_f_2_norm = pd.read_csv("astrid_data.csv")
g = np.repeat(np.arange(df_f_2_norm.shape[0]//12), 12)

N = 12

N_lim = int(0.5*N*(N-1)) 
result_index = ['D{}'.format(tag) for tag in range(1,N_lim+1)] # Column labels
two_norm = df_f_2_norm.groupby(g)[["X", "Y", "Z"]].apply(lambda g: pd.Series(pdist(g), index=result_index))
Python's psutil module and a bizarre issue

Python's psutil module and a bizarre issue


By : navnit
Date : March 29 2020, 07:55 AM
Hope that helps Not all of the information from each process will be available to you unless you are the root user/administrator. See this question: python psutil on windows gives access denied.
You would be better off changing your first example to specifically catch these cases, with:
code :
try:    
    if str(psutil.Process(pid).name()) == name:      
        return True    
except AccessDenied:    
    print "Unable to access PID:",pid
How to use an imported function in a loop with the loop variable inside that function?

How to use an imported function in a loop with the loop variable inside that function?


By : joeyhaha
Date : March 29 2020, 07:55 AM
I wish this help you One of the main points of functions is that they accept arguments. In your case, you should define the function so that it accepts i as an argument:
code :
def py_function(i):
    print (i)
for i in list:
    py_function(i)
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