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Questions - sys

Passing multiple arguments to Python script using sys.argv[1] and numpy array. IndexError: list index out of range

I'm working in a small code to receive multiple arguments from an MQTT server and use them to predict another value. I'm showing a simplified code here just to get some help. To pass the arguments to ...
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miinch

python

numpy

indexing

sys

multiple-arguments

Votes: 0

Answers: 2

Latest Answer

Start with something simple to validate the data you are receiving. Do something like: import sys # Verify first so you don't get an error # This check verifies we have at least two parameters ...
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ComputerKarate

export my output to a text file (python3) line 15 and 30

I want to export the output to this code into a text file. i tried to do this several different ways. sometimes i would have no errors but when i go to open the text file it is blank. i want to save t...
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Jay A

python

datetime

tkinter

sys

Votes: 0

Answers: 1

Latest Answer

I don't understand what is your problem. And I don't understand why you want to use notepad and save for this. Python has open(), write() and close() to write text directly to file. # --- functions --...
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furas

How to continuously read from stdin (not just once input file is done)?

I have these two scripts: clock.py #!/usr/bin/env python3 import time while True: print("True", flush=True) time.sleep(1) continuous_wc.py #!/usr/bin/env python3 import sys def m...
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BigBoy1337

python

stdout

stdin

sys

Votes: 0

Answers: 2

Latest Answer

In addition to print(x, flush=True) you must also flush after sys.stdout.write. Note that the programs would technically work without flush, but they would print values very infrequently, in very larg...
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Mike Clark

How to collect all the print content and save them in a txt in Python?

I want to collect all of the print content and save them in a txt file. I use this answer's method to generate and collect logs. Also I use a threading, because in my real environment, get_logs and ma...
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haojie

python

multithreading

sys

Votes: 0

Answers: 2

Latest Answer

you can set sys.stdout to a file object to redirect the outpus: import sys sys.stdout = open(PATH_TO_LOG_FILE, "w") print('test') do_it() sys.stdout.close() you can also use contextlib.redi...
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Tal Folkman

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