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Programming-Idioms

  • Perl
  • Python

Idiom #59 Write to standard error stream

Print the message "x is negative" to standard error (stderr), with integer x value substitution (e.g. "-2 is negative").

import sys
print(x, "is negative", file=sys.stderr)

Python3
print STDERR "$x is negative";
with Ada.Text_IO;
use Ada.Text_IO;
Put_Line (Standard_Error, Integer'Image (X) & " is negative");

New implementation...
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