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Wing Pro 7: Print Function Execution Is Inconsistent

asked 2020-09-15 01:27:35 -0500

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When debugging/stepping over line by line, the first print can always print without any issue. However, from the second print on, none will print until the end of the script. When the last line finished and is executed, the Debug I/O finally prints the missing lines all at once. This seems like a bug for me.

Here's the code example

print("First line prints without any problem")
print("From this line on...")
print("Nothing prints")
print("Until the end of this script/line is executed")

Here are the software/OS versions

  1. Python exe: 3.8.5
  2. OS: Windows 10 Pro
  3. Wing Pro 7.1.3.2 (rev 3600c9873c6f)

Some of my findings:

  1. The same issue perists when using different Python 3 (3.7.x) with the same Wing Pro (7.1.3.2) on the same OS (Windows 10 Pro)
  2. The same issue doesn't exist with WingIDE6.1 on the same OS (Windows 10 Pro)
  3. The same issue doesn't exist on my Macbook Pro (macOS Catalina 10.15.6) with Wing Pro 7.1.3.1 (rev 3b2ed12a0484)
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answered 2020-09-15 09:03:03 -0500

This may be a bug fixed since the versions you're running. I'm not seeing it with Wing 7.2.5.1 on macOS or Windows and there have been relatively recent fixes to I/O buffering.

Note that if you set Python Options under the Debug/Execute tab of Project Properties then omitting -u may cause this. That tells Python to run in un-buffered mode. We specify that option by default but it's possible for the user to override this.

Please let us know if this does not help.

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Comments

I installed Wing Pro 7.2.5.0 (rev 61efbca05d93) on macOS Catalina 10.15.6 and the problem has been resolved. Thank you for your prompt resolution.

baiyi.tzeng gravatar imagebaiyi.tzeng ( 2020-09-15 17:40:46 -0500 )edit

Great, thanks for confirming that!

Wingware Support gravatar imageWingware Support ( 2020-09-16 09:06:00 -0500 )edit

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Asked: 2020-09-15 01:27:35 -0500

Seen: 55 times

Last updated: Sep 15