originell · February 27, 2012 10:29 · Feb 27, 2012
diff --git a/extract_exceptions.py b/extract_exceptions.py
@@ -0,0 +1,59 @@
+"""
+Extract unique Python-Exceptions with their Traceback from a log/text file.
+
+Usage::
+
+    python extract_exceptions.py -f logfile.txt
+
+Furthermore it supports excluding exceptions you don't want to have::
+
+    python extract_exceptions.py -f logfile.txt -e ValueError,AttributeError
+
+Would exclude any ``ValueError`` or ``AttributeError`` from the list.
+"""
+from optparse import OptionParser
+
+
+parser = OptionParser()
+parser.add_option('-f', '--file', dest='file',
+                  help='The file to extract exceptions from',
+                  default="",
+                  metavar='FILE')
+parser.add_option('-e', '--exclude', dest='exclude_list',
+                  help='Exclude certain exceptions from output.',
+                  default="",
+                  metavar='Exception,Exception,...')
+options, args = parser.parse_args()
+
+
+bufMode = False
+buf = ''
+errors = []
+
+with open(options.file, 'r') as f:
+    for line in f:
+        if 'Traceback' in line:
+            bufMode = True
+            continue
+        # Usually a Traceback includes a new line at the end, therefore
+        # a check for line length should be safe. However this might bite
+        # you ;-)
+        if line and len(line) < 5:
+            bufMode = False
+            errors.append(buf)
+            buf = ''
+        if bufMode:
+            # Truncate lines longer than 400 characters.
+            if len(line) > 400:
+                line = line[:400]+'...\n'
+            buf += line
+
+unique_errs = set(errors)
+excludes = []
+if options.exclude_list:
+    excludes = options.exclude_list.split(',')
+for err in unique_errs:
+    if any([excl in err for excl in excludes]):
+        continue
+    print err
+    print