Add tool to query issue stats on Github.

tools/github_stats.py

@@ -0,0 +1,31 b''
+import json
+from datetime import datetime, timedelta
+import sys
+from urllib import urlopen
+
+def get_issues(project="ipython/ipython/", state="open"):
+    """Get a list of the issues from the Github API."""
+    f = urlopen("http://github.com/api/v2/json/issues/list/%s%s" % (project, state))
+    return json.load(f)['issues']
+
+def _parse_datetime(s):
+    """Parse dates in the format returned by the Github API."""
+    return datetime.strptime(s.rpartition(" ")[0], "%Y/%m/%d %H:%M:%S")
+
+def issues_closed_since(period=timedelta(days=365), project="ipython/ipython/"):
+    """Get all issues closed since a particular point in time. period
+can either be a datetime object, or a timedelta object. In the
+latter case, it is used as a time before the present."""
+    allclosed = get_issues(project=project, state='closed')
+    if isinstance(period, timedelta):
+        period = datetime.now() - period
+    return [i for i in allclosed if _parse_datetime(i['closed_at']) > period]
+
+if __name__ == "__main__":
+    # Demo
+    if len(sys.argv) > 1:
+        days = int(sys.argv[1])
+    else:
+        days = 365
+    n = len(issues_closed_since(timedelta(days=days)))
+    print "%d issues closed in the last %d days." % (n, days)