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Editorial Team
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Asked: 2026-06-14T12:06:50+00:00

I have written a little script that reads every hour from a website and

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I have written a little script that reads every hour from a website and search for a certain string. This string is a number with which i want to calculate.

If i run the script with “nohup python3 /path/to/script &” it works for a while. After few hours somethimes some days or even weaks the script stops working with the error output in “~/nohup” that the float() can’t convert the string in line 41.

line 41: current_value = float(html_content[temperature_pos_begin:temperature_pos_end])

Whole script: http://pastebin.com/AEY1Kafa

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1 Answer

  1. Editorial Team

    Use an exception handler to see what is causing the error. Perhaps they use some sort of placeholder if the temperature isn’t available.

    try:
    current_value = float(html_content[temperature_pos_begin:temperature_pos_end])
except ValueError:
    print "Failed to convert %r to a float"%html_content[temperature_pos_begin:temperature_pos_end]
    current_value = None # or something that makes sense
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