def getvar(self, varname):
'''return a substitution variable'''
- if not varname in self.vars:
+ if varname not in self.vars:
return None
return self.vars[varname]
if var_end == -1:
return text
var_name = text[var_start + 2:var_end]
- if not var_name in self.vars:
+ if var_name not in self.vars:
raise RuntimeError("Unknown substitution variable ${%s}" % var_name)
text = text.replace("${%s}" % var_name, self.vars[var_name])
return text