Added custom exceptions for each module (#11)

* Created custom exceptions

* Fixed test errors. Added exceptions to code

pydicts/casts.py

@@ -4,6 +4,7 @@
 from datetime import timedelta, date, datetime, time
 from gettext import translation
 from importlib.resources import files
+from pydicts import exceptions
 from zoneinfo import ZoneInfo
 
 try:
@@ -21,11 +22,13 @@ def object_or_empty(v):
 
 ## Converts a string  to a decimal
 def str2decimal(s, type):
+    if s is None:
+        return None
     if type==1: #2.123,25
         try:
             return Decimal(s.replace(".","").replace(",", "."))
         except:
-            return None
+            raise exceptions.CastException(_("Method str2decimal couln't convert {0} ({1}) to a Decimal"))
 
 
 def str2bool(value):
@@ -35,7 +38,7 @@ def str2bool(value):
         @return Boolean
     """
     def exception():
-        raise Exception(_("Method str2bool couldn't convert {0} ({1}) to a boolean").format(value, value.__class__))
+        raise exceptions.CastException(_("Method str2bool couldn't convert {0} ({1}) to a boolean").format(value, value.__class__))
     if not value.__class__ is str:
         exception()
 
@@ -183,7 +186,7 @@ def dtaware_day_end(dt, tz_name):
         Returns the last  datetime (microsecond  level) of the  day in tz_name zone
     """
     if is_naive():
-        raise Exception(_("Datetime parameter should be aware"))
+        raise exceptions.CastException(_("A datetime with timezone is needed"))
     dt=dtaware_changes_tz(dt, tz_name)
     return dt.replace(hour=23, minute=59, second=59, microsecond=999999)
 
@@ -192,7 +195,7 @@ def dtnaive_day_end(dt):
         Returns the last  datetime (microsecond  level) of the  day in naive format
     """
     if is_aware(dt):
-        raise Exception(_("Datetime parameter should be naive"))
+        raise exceptions.CastException(_("A datetime without timezone is needed"))
     return dt.replace(hour=23, minute=59, second=59, microsecond=999999)
 
 ## Returns the end of the day dtnaive from a date
@@ -211,7 +214,7 @@ def dtnaive_day_start(dt):
 ## Returns a dtnaive or dtawre (as parameter) with the end of the day in zone tz_name
 def dtaware_day_start(dt, tz_name):
     if is_naive():
-        raise Exception(_("Datetime parameter should be aware"))
+        raise exceptions.CastException(_("A datetime with timezone is needed"))
     dt=dtaware_changes_tz(dt, tz_name)
     return dt.replace(hour=0, minute=0, second=0, microsecond=0)
 
@@ -277,7 +280,7 @@ def str2time(s, format="HH:MM"):
                 points=s.split(":")
                 return time(int(points[0]), int(points[1]))
     else:
-        raise Exception(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
+        raise exceptions.CastException(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
 
 ## Converts a time to a string
 def time2str(ti, format="HH:MM" ):
@@ -315,7 +318,7 @@ def str2date(iso, format="YYYY-MM-DD"):
         except:
             return None
     else:
-        raise Exception(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
+        raise exceptions.CastException(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
 
 def str2dtnaive(s, format):
     allowed=["%Y%m%d%H%M","%Y-%m-%d %H:%M:%S","%d/%m/%Y %H:%M","%d %m %H:%M %Y","%Y-%m-%d %H:%M:%S.","%H:%M:%S", '%b %d %H:%M:%S']
@@ -344,7 +347,7 @@ def str2dtnaive(s, format):
             s=f"{date.today().year} {s}"
             return datetime.strptime(s, '%Y %b %d %H:%M:%S')
     else:
-        raise Exception(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
+        raise exceptions.CastException(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
 
 def str2dtaware(s, format, tz_name='UTC'):
     allowed=["%Y-%m-%d %H:%M:%S%z","%Y-%m-%d %H:%M:%S.%z", "JsUtcIso"]
@@ -397,7 +400,7 @@ def epochmicros2dtaware(n, tz="UTC"):
 ## @return String
 def dtaware2str(dt, format):
     if is_naive(dt)==True:
-        raise Exception("A dtaware is needed for {}").format(dt)
+        raise exceptions.CastException("A datetime with timezone is needed for {}").format(dt)
     else:
         return dtnaive2str(dt, format)
 
@@ -421,7 +424,7 @@ def dtnaive2str(dt, format):
         elif format=="JsUtcIso":
             return dt.strftime("%Y-%m-%dT%H:%M:%SZ")
     else:
-        raise Exception(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
+        raise exceptions.CastException(_("I can't convert this format '{}'. I only support this {}").format(format, allowed))
 
 ## Changes zoneinfo from a dtaware object
 ## For example:
@@ -437,7 +440,7 @@ def dtaware_changes_tz(dt,  tzname):
     if is_aware(dt):
         return dt.astimezone(ZoneInfo(tzname))
     else:
-        raise Exception(_("Dtaware needed"))
+        raise exceptions.CastException(_("A datetime with timezone is needed"))
 
 ## Returns a list of tuples (year, month) from a month to another month, both included
 ## @param year_from Integer

pydicts/exceptions.py

@@ -0,0 +1,14 @@
+class LodException(Exception):
+    pass
+
+class CastException(Exception):
+    pass
+
+class LodXYVException(Exception):
+    pass
+
+class LodYMVException(Exception):
+    pass
+
+class LolException(Exception):
+    pass

pydicts/lol.py

@@ -1,5 +1,6 @@
 from gettext import translation
 from importlib.resources import files
+from pydicts import exceptions
 
 try:
     t=translation('pydicts', files("pydicts") / 'locale')
@@ -14,7 +15,7 @@
 ## @param column List with the values to add. Must be of the same size of rows
 def lol_add_column(rows, index, column):
     if len(rows)!=len(column):
-        raise Exception(_("I can't add a column with different size of lol"))
+        raise exceptions.LolException(_("I can't add a column with different size of lol"))
     r_rows=[]
     for i, row in enumerate(rows):
         r_rows.append(row[0:index] + [column[i],] + row[index:len(row)])
@@ -23,7 +24,7 @@ def lol_add_column(rows, index, column):
 ## Returns a list with object in positions removed
 def list_remove_positions(l, listindex):
     if l is None:
-        raise Exception(_("I can't remove positions from a None list"))
+        raise exceptions.LolException(_("I can't remove positions from a None list"))
         return None
     r=[]
     for i, o in enumerate(l):

pydicts/tests/test_casts.py

@@ -1,6 +1,6 @@
 from datetime import date, time, datetime
 from decimal import Decimal
-from pydicts import casts
+from pydicts import casts, exceptions
 from pytest import raises
 from zoneinfo import ZoneInfo
 
@@ -19,11 +19,11 @@ def test_str2decimal():
     assert casts.str2decimal("2.123,25", 1)==Decimal("2123.25")
 
 def test_str2bool():
-    with raises(Exception):
+    with raises(exceptions.CastException):
         casts.str2bool(None)==None
-    with raises(Exception):
+    with raises(exceptions.CastException):
         assert casts.str2bool(1)==True
-    with raises(Exception):
+    with raises(exceptions.CastException):
         assert casts.str2bool(0)==False
     assert casts.str2bool("true")==True
     assert casts.str2bool("True")==True
@@ -255,5 +255,5 @@ def test_dtaware_changes_tz():
 
 def test_months():
     assert casts.months(2023, 11, 2024, 1)== [(2023, 11), (2023, 12), (2024, 1)]
-    assert casts.months(2023, 9)== [(2023, 9), (2023, 10), (2023, 11)]
+    assert casts.months(2023, 9,  2023, 9)== [(2023, 9)]