1 files changed, 14 insertions, 0 deletions
diff --git a/exceptions.py b/exceptions.py
new file mode 100644
index 0000000..ca68547
--- /dev/null
+++ b/exceptions.py
@@ -0,0 +1,14 @@
+class InvalidAmountError(ValueError):
+    '''Raise when some member is already registered'''
+
+class AlreadyRegisteredError(Exception):
+    '''Raise when some member is already registered'''
+
+class NotRegisteredError(Exception):
+    '''Raise when the sender is not registered'''
+
+class InvalidArgumentError(Exception):
+    '''Raise when some cmd is called with wrong arguments'''
+
+class NotAllowedError(Exception):
+    '''Raise when some member is already registered'''