diff options
Diffstat (limited to 'examples/eval_arith.py')
| -rw-r--r-- | examples/eval_arith.py | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/examples/eval_arith.py b/examples/eval_arith.py index 0896c01..8f3e996 100644 --- a/examples/eval_arith.py +++ b/examples/eval_arith.py @@ -11,7 +11,7 @@ from pyparsing import Word, nums, alphas, Combine, oneOf, \ opAssoc, infixNotation, Literal -class EvalConstant(object): +class EvalConstant: "Class to evaluate a parsed constant or variable" vars_ = {} def __init__(self, tokens): @@ -22,7 +22,7 @@ class EvalConstant(object): else: return float(self.value) -class EvalSignOp(object): +class EvalSignOp: "Class to evaluate expressions with a leading + or - sign" def __init__(self, tokens): self.sign, self.value = tokens[0] @@ -39,7 +39,7 @@ def operatorOperands(tokenlist): except StopIteration: break -class EvalPowerOp(object): +class EvalPowerOp: "Class to evaluate multiplication and division expressions" def __init__(self, tokens): self.value = tokens[0] @@ -49,7 +49,7 @@ class EvalPowerOp(object): res = val.eval()**res return res -class EvalMultOp(object): +class EvalMultOp: "Class to evaluate multiplication and division expressions" def __init__(self, tokens): self.value = tokens[0] @@ -62,7 +62,7 @@ class EvalMultOp(object): prod /= val.eval() return prod -class EvalAddOp(object): +class EvalAddOp: "Class to evaluate addition and subtraction expressions" def __init__(self, tokens): self.value = tokens[0] @@ -75,7 +75,7 @@ class EvalAddOp(object): sum -= val.eval() return sum -class EvalComparisonOp(object): +class EvalComparisonOp: "Class to evaluate comparison expressions" opMap = { "<" : lambda a,b : a < b, |