+SET01 = frozenset(("0", "1"))
+DECIMAL_SIGNS = ".,"
+
+
+def pureint(value):
+ i = int(value)
+ if (value[0] in "+- ") or (value[-1] == " "):
+ raise ValueError("non-pure integer")
+ return i
+
+def fractions2float(fractions_raw):
+ pureint(fractions_raw)
+ return float("0." + fractions_raw)