UPDATE: generate execises files implemented

Author: thiswind

.gitignore

@@ -127,3 +127,5 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+my_exercises

my_python_exercises.py

@@ -1,16 +1,49 @@
+import os
 import re
-from typing import List, Dict
+import shutil
+from functools import reduce
+from pathlib import Path
+from string import Template
+from typing import Dict, List
+
+width_chars = 64
+template_str: str = \
+    f'''
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+#
+{'#' * width_chars}
+#
+$title
+$level
+#
+{'#' * width_chars}
+#
+$question
+#
+$hints
+#
+{'#' * width_chars}
+'''
+tempate: Template = Template(template_str)
+
+questions_file_name: str = 'Python-programming-exercises/100+ Python challenging programming exercises.txt'
+questions_file_title_offset: int = 2
+dist_dir_name: str = 'my_exercises'
+
+Path(dist_dir_name).mkdir(parents=True, exist_ok=True)
+shutil.rmtree(dist_dir_name)
+Path(dist_dir_name).mkdir(parents=True, exist_ok=True)
 
-file_name: str = 'Python-programming-exercises/100+ Python challenging programming exercises.txt'
 
 buffer: str = None
-with open(file_name, 'r') as f:
+with open(questions_file_name, 'r') as f:
     buffer = f.read()
 
 questions: List = re.split(r'#[-]+#', buffer)
 questions = [str(x).strip() for x in questions if len(str(x).strip()) > 0]
 
-for i in range(2, len(questions)):
+for i in range(questions_file_title_offset, len(questions)):
     one: str = questions[i]
     lines: List[str] = [x for x in one.split('\n') if len(str(x).strip()) > 0]
 
@@ -34,16 +67,18 @@
             key = 'hints'
         elif line.startswith('Solution'):
             key = 'solution'
-        
+
         if key == '':
             continue
-        
+
         data[key] += f'{line}\n'
 
-    print(f'title:\t {data["title"]}')
-    print(f'level:\t {data["level"]}')
-    print(f'question:\t {data["question"]}')
-    print(f'hints:\t {data["hints"]}')
-    print(f'solution:\t {data["solution"]}')
+    source: str = tempate.substitute(data)
+    lines: List = source.split('\n')
+    lines = [x for x in lines if len(x) > 0]
+    lines = map(lambda a: a if str(a).startswith('#') else '# ' + a, lines)
+    source = reduce(lambda a, b: a + '\n' + b, lines)
 
-    print('#'*20)
+    source_file_name: str = f'question_{i-1}.py'
+    with open(os.path.join(dist_dir_name, source_file_name), 'w') as f:
+        f.write(source)