init

Q2/code.py

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+# code.py
+# Please use env.yaml to build corresponding conda env if you want to run this script
+#
+# author  : deng
+# date    : 20230919
+# platform: MacBook Pro 14 2021
+
+VALID_CHARS = ['T', 'F', 'O', 'A', '(', ')']
+CAL_DICT = {
+    'T': 'T',
+    'F': 'F',
+    'TAT': 'T',
+    'TAF': 'F',
+    'FAT': 'F',
+    'FAF': 'F',
+    'TOT': 'T',
+    'TOF': 'T',
+    'FOT': 'T',
+    'FOF': 'F'
+}
+
+
+def log_cal(exp: str) -> str:
+    while True:
+        if exp in CAL_DICT:
+            return CAL_DICT[exp]
+        else:
+            try:
+                exp = CAL_DICT[exp[:3]] + exp[3:]
+            except KeyError:
+                return 'E'
+
+
+def bool_exp(exp: str) -> str:
+    stack = []
+
+    for char in exp:
+        if char not in VALID_CHARS:
+            return 'E'
+        if char == ')':
+            sub_exp = ''
+            while True:
+                try:
+                    val = stack.pop()
+                    if val == '(':
+                        break
+                    sub_exp = val + sub_exp
+                except IndexError:
+                    return 'E'
+            cal_exp = log_cal(sub_exp)
+            if cal_exp == 'E':
+                return 'E'
+            stack.append(cal_exp)
+        else:
+            stack.append(char)
+
+    return log_cal(''.join(stack))
+
+
+if __name__ == '__main__':
+
+    exp = input('Please input expression:').upper()
+    print(bool_exp(exp))

Q2/env.yaml

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+name: Q2
+channels:
+  - conda-forge
+dependencies:
+  - bzip2=1.0.8
+  - ca-certificates=2023.7.22
+  - libffi=3.4.2
+  - libsqlite=3.43.0
+  - libzlib=1.2.13
+  - ncurses=6.4
+  - openssl=3.1.2
+  - pip=23.2.1
+  - python=3.10.12
+  - readline=8.2
+  - setuptools=68.2.2
+  - tk=8.6.12
+  - tzdata=2023c
+  - wheel=0.41.2
+  - xz=5.2.6
+prefix: /Users/xiao_deng/miniforge3/envs/Q2