Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_4.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("Y29zZW5vKDEp"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpj6RNaC/___code___.py", line 3, in <module>
exec compile(u'coseno(_sage_const_1 )
File "", line 1, in <module>
NameError: name 'coseno' is not defined