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Raise an error when template key cannot be found #1

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Raise an error when template key cannot be found #1

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5 changes: 4 additions & 1 deletion chevron/renderer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@ def unicode(x, y):
# Helper functions
#

class TemplateError(BaseException):
pass

def _html_escape(string):
"""HTML escape all of these " & < >"""

Expand Down Expand Up @@ -96,7 +99,7 @@ def _get_key(key, scopes, warn=False):
# We couldn't find the key in any of the scopes

if warn:
sys.stderr.write("Could not find key '%s'%s" % (key, linesep))
raise TemplateError("Missing a value for key '%s'" % (key, ))

return ''

Expand Down