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-rw-r--r--gerber/gerber_statements.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/gerber/gerber_statements.py b/gerber/gerber_statements.py
index 27066cd..1159dc0 100644
--- a/gerber/gerber_statements.py
+++ b/gerber/gerber_statements.py
@@ -954,7 +954,7 @@ class CommentStmt(Statement):
def __init__(self, comment):
Statement.__init__(self, "COMMENT")
- self.comment = comment
+ self.comment = comment if comment is not None else ""
def to_gerber(self, settings=None):
return 'G04{0}*'.format(self.comment)
@@ -1026,3 +1026,7 @@ class UnknownStmt(Statement):
def to_gerber(self, settings=None):
return self.line
+
+ def __str__(self):
+ return '<Unknown Statement: \'%s\'>' % self.line
+