Post-final QA fixes

Author: bzaczynski

python-with-statement/exc_handling.py

@@ -12,8 +12,9 @@ def __exit__(self, exc_type, exc_value, exc_tb):
             return True
 
 
-with HelloContextManager() as hello:
-    print(hello)
-    hello[100]
+if __name__ == "__main__":
+    with HelloContextManager() as hello:
+        print(hello)
+        hello[100]
 
-print("Continue normally from here...")
+    print("Continue normally from here...")

python-with-statement/hello.py

@@ -5,15 +5,16 @@ def __enter__(self):
 
     def __exit__(self, exc_type, exc_value, exc_tb):
         print("Leaving the context...")
-        if isinstance(exc_value, IndexError):
-            print(f"An exception occurred in with block: {exc_type}")
-            print(f"Exception message: {exc_value}")
-            return True
-        return False
+        print(f"{exc_type  = }")
+        print(f"{exc_value = }")
+        print(f"{exc_tb    = }")
 
 
-with HelloContextManager() as hello:
-    print(hello)
-    # hello[100]
+if __name__ == "__main__":
+    with HelloContextManager() as hello:
+        print(hello)
 
-print("Continue normally from here...")
+    print("Continue normally from here...")
+
+    with HelloContextManager() as hello:
+        hello[100]

python-with-statement/indenter.py

@@ -1,5 +1,6 @@
 class Indenter:
-    def __init__(self):
+    def __init__(self, width=2):
+        self.indentation = " " * width
         self.level = -1
 
     def __enter__(self):
@@ -10,4 +11,15 @@ def __exit__(self, *_):
         self.level -= 1
 
     def print(self, text):
-        print("    " * self.level + text)
+        print(self.indentation * self.level + text)
+
+
+if __name__ == "__main__":
+    with Indenter() as indenter:
+        indenter.print("<div>")
+        with indenter:
+            indenter.print("<p>")
+            with indenter:
+                indenter.print("Hello, World!")
+            indenter.print("</p>")
+        indenter.print("</div>")

python-with-statement/redirect.py

@@ -11,3 +11,10 @@ def __enter__(self):
 
     def __exit__(self, *_):
         sys.stdout = self.std_output
+
+
+if __name__ == "__main__":
+    with open("hello.txt", "w") as file:
+        with StandardOutputRedirector(file):
+            print("Hello, World!")
+        print("Back to the standard output...")

python-with-statement/requirements.txt

@@ -0,0 +1,9 @@
+aiohappyeyeballs==2.6.1
+aiohttp==3.12.15
+aiosignal==1.4.0
+attrs==25.3.0
+frozenlist==1.7.0
+idna==3.10
+multidict==6.6.3
+propcache==0.3.2
+yarl==1.20.1

python-with-statement/scan_directory.py

@@ -1,5 +1,5 @@
 import os
 
-with os.scandir(".") as dir_entries:
-    for entry in dir_entries:
+with os.scandir(".") as entries:
+    for entry in entries:
         print(entry.name, "->", entry.stat().st_size, "bytes")

python-with-statement/site_checker_v1.py

@@ -3,6 +3,13 @@
 import aiohttp
 
 
+async def main():
+    await asyncio.gather(
+        check("https://realpython.com"),
+        check("https://pycoders.com/"),
+    )
+
+
 async def check(url):
     async with aiohttp.ClientSession() as session:
         async with session.get(url) as response:
@@ -11,11 +18,5 @@ async def check(url):
             print(f"{url}: type -> {html[:17].strip()}")
 
 
-async def main():
-    await asyncio.gather(
-        check("https://realpython.com"),
-        check("https://pycoders.com/"),
-    )
-
-
-asyncio.run(main())
+if __name__ == "__main__":
+    asyncio.run(main())

python-with-statement/site_checker_v2.py

@@ -16,18 +16,19 @@ async def __aexit__(self, *_):
         await self.session.close()
 
 
-async def check(url):
-    async with AsyncSession(url) as response:
-        print(f"{url}: status -> {response.status}")
-        html = await response.text()
-        print(f"{url}: type -> {html[:17].strip()}")
-
-
 async def main():
     await asyncio.gather(
         check("https://realpython.com"),
         check("https://pycoders.com"),
     )
 
 
-asyncio.run(main())
+async def check(url):
+    async with AsyncSession(url) as response:
+        print(f"{url}: status -> {response.status}")
+        html = await response.text()
+        print(f"{url}: type -> {html[:17].strip()}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

python-with-statement/timer.py

@@ -10,6 +10,7 @@ def __exit__(self, *_):
         print(f"Elapsed time: {end - self.start:.4f} seconds")
 
 
-with Timer():
-    # The code to measure goes here...
-    sleep(0.5)
+if __name__ == "__main__":
+    with Timer():
+        # The code to measure goes here...
+        sleep(0.5)

python-with-statement/writable_v1.py

@@ -11,5 +11,6 @@ def __exit__(self, *_):
             self.file_obj.close()
 
 
-with WritableFile("hello.txt") as file:
-    file.write("Hello, World!\n")
+if __name__ == "__main__":
+    with WritableFile("hello.txt") as file:
+        file.write("Hello, World!\n")