fix: correct python sample (#344)

docs/06-advanced-techniques/31-the-secure-shell/diagrams/asymmetric-encryption-share-secret.drawio

@@ -1 +1,54 @@
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samples/programs/lookup/lookup-v1.py

@@ -17,7 +17,7 @@
     # Add the word to our list of lookups, and strip any whitespace from the
     # beginning and end of it. For now, we don't have a definition.
     word = word.strip()
-    definition = ''
+    definition = ""
 
     # Write the result.
-    print("{} - {}".format(word, definition))
+    print(word, " - ", definition)

samples/programs/lookup/lookup-v2.py

@@ -19,7 +19,7 @@ def search_for_word(word):
     # If the word is not found, return an empty definition.
     except urllib.error.HTTPError as http_error:
         if http_error.code == 404:
-            return ''
+            return ""
         raise
 
     # Now try and parse the data.
@@ -49,4 +49,4 @@ def search_for_word(word):
     definition = search_for_word(stripped_word)
 
     # Write the result.
-    print("{} - {}".format(word, definition))
+    print(word, " - ", definition)

samples/programs/lookup/lookup-v3.py

@@ -11,10 +11,10 @@
 # Create an argument parser and define the arguments for our program.
 parser = argparse.ArgumentParser()
 parser.add_argument(
-    '-c', '--crop',
-    help='crop the output line length',
+    "-c", "--crop",
+    help="crop the output line length",
     type=int,
-    nargs='?',
+    nargs="?",
     const=80,         # Default value if -c is supplied
     default=None)     # Default value if -c is not supplied
 args = parser.parse_args()
@@ -35,7 +35,7 @@ def search_for_word(word):
     # If the word is not found, return an empty definition.
     except urllib.error.HTTPError as http_error:
         if http_error.code == 404:
-            return ''
+            return ""
         raise
     except Exception as e:
         sys.stderr.write("An error occurred trying to download the definition of '{}'".format(word))

samples/programs/lookup/lookup.py

@@ -19,22 +19,22 @@
 
 # Create an argument parser and define the arguments for our program.
 parser = argparse.ArgumentParser(
-    prog='parser',
-    description='lookup the defintion of words from dictionaryapi.dev',
+    prog="parser",
+    description="lookup the defintion of words from dictionaryapi.dev",
     epilog=examples,
     formatter_class=argparse.RawDescriptionHelpFormatter
 )
 parser.add_argument(
-    'words',
-    help='optional list of words to define - if omitted stdin is used',
+    "words",
+    help="optional list of words to define - if omitted stdin is used",
     type=str,
     nargs='*'
 )
 parser.add_argument(
-    '-c', '--crop',
-    help='crop the output line length',
+    "-c", "--crop",
+    help="crop the output line length",
     type=int,
-    nargs='?',
+    nargs="?",
     const=80,         # Default value if -c is supplied
     default=None      # Default value if -c is not supplied
 )
@@ -56,7 +56,7 @@ def search_for_word(word):
     # If the word is not found, return an empty definition.
     except urllib.error.HTTPError as http_error:
         if http_error.code == 404:
-            return ''
+            return ""
         raise
     # If the user hits ctrl hit, exit without an error message.
     except KeyboardInterrupt: