Disable progress bar if not running in a terminal

Author: claudiodsf

requake/scan/scan_catalog.py

@@ -9,6 +9,7 @@
     GNU General Public License v3.0 or later
     (https://www.gnu.org/licenses/gpl-3.0-standalone.html)
 """
+import sys
 import logging
 import csv
 from math import factorial
@@ -60,7 +61,10 @@ def _process_pairs(fp_out, nevents, catalog):
     writer.writerow(fieldnames)
     npairs = int(factorial(nevents)/(factorial(2)*factorial(nevents-2)))
     logger.info(f'Processing {npairs:n} event pairs')
-    with tqdm(total=npairs, unit='pairs', unit_scale=True) as pbar:
+    # Disable progress bar if not running in a terminal
+    disable_bar = not sys.stderr.isatty()
+    with tqdm(total=npairs, unit='pairs', unit_scale=True,
+              disable=disable_bar) as pbar:
         for pair in combinations(catalog, 2):
             pbar.update()
             if not _pair_ok(pair):