add monthfirstday function

appPublic/timeUtils.py

@@ -17,6 +17,10 @@ def days_between(date_str1, date_str2):
 	days = abs(delta.days)
 	return days
 
+def monthfirstday():
+	d = datetime.now()
+	return '%4d-%02d-01' % (d.year, d.month)
+
 def curDatetime():
 	return datetime.now()