[Sync Iteration] python/wordy/1

solutions/python/wordy/1/wordy.py

@@ -0,0 +1,89 @@
+"""
+Parse and evaluate simple math word problems
+returning the answer as an integer.
+
+Handle a set of operations, in sequence.
+
+Since these are verbal word problems, evaluate
+the expression from left-to-right, ignoring the
+typical order of operations.
+"""
+
+import string
+
+STR_TO_OPERATOR: dict = {
+    "plus": "+",
+    "minus": "-",
+    "multiplied": "*",
+    "divided": "/",
+}
+
+WRONG_OPERATORS: list[str] = [
+    "plus?",
+    "minus?",
+    "multiplied?",
+    "divided?",
+    "plus plus",
+    "plus multiplied",
+    "minus minus",
+    "multiplied multiplied",
+    "divided divided",
+    "What is?",
+]
+
+
+def answer(question: str) -> int:
+    if "cubed" in question:
+        raise ValueError("unknown operation")
+
+    for item in WRONG_OPERATORS:
+        if item in question:
+            raise ValueError("syntax error")
+
+    digits: list[bool] = []
+    for char in question:
+        if char.isdigit():
+            digits.append(True)
+
+    operators: list[bool] = []
+    for key, val in STR_TO_OPERATOR.items():
+        if key in question or val in question:
+            operators.append(True)
+
+    if not any(digits + operators):
+        raise ValueError("unknown operation")
+
+    print(f"\n{question}")
+    return eval(_reformat(question))
+
+
+def _reformat(question: str) -> str:
+    # 1
+    question = question.replace("?", "")
+    # 2
+    chars: list[str] = list(char for char in question)
+    for i, char in enumerate(chars):
+        if char in STR_TO_OPERATOR.values():
+            chars[i] = f" {char} "
+    # 3
+    question = "".join(chars)
+    print(f"\n new question:{question}")
+    # 4
+    question_list: list[str] = question.split()
+    for i, item in enumerate(question_list):
+        # print(f"\nitem: {item}")
+        if not (
+            item.isdigit()
+            or item in STR_TO_OPERATOR.keys()
+            or item in STR_TO_OPERATOR.values()
+        ):
+            question_list[i] = ""
+            # print("\n#1")
+        elif item in STR_TO_OPERATOR.keys():
+            # print("\n#2")
+            question_list[i] = STR_TO_OPERATOR[item]
+
+    print(f"\n{question_list}")
+    print(f"\n{' '.join(question_list)}")
+
+    return " ".join(question_list)