[Enhancement]: Support hiding password while input.

[wenlien]

Background story

I use this tool to demo AWS services, but the password will be show to the audiences during the environment set up. I don't feel comfortable about it.

What does this example accomplish?

I want to hide the password while I'm typing it.

Which AWS service(s)?

RDS (and more)

Which AWS SDKs or tools?

• [ ] All languages
• [ ] .NET
• [ ] C++
• [ ] Go (v2)
• [ ] Java
• [ ] Java (v2)
• [ ] JavaScript
• [ ] JavaScript (v3)
• [ ] Kotlin
• [ ] PHP
• [X] Python
• [ ] Ruby
• [ ] Rust
• [ ] Swift
• [ ] Not applicable

Are there existing code examples to leverage?

No response

Do you have any reference code?

diff --git a/python/demo_tools/question.py b/python/demo_tools/question.py
index fca618a7f..0bda11de9 100644
--- a/python/demo_tools/question.py
+++ b/python/demo_tools/question.py
@@ -8,7 +8,7 @@ and converts input, and returns answers.


 # snippet-start:[python.demo_tools.Question]
-def ask(question, *validators):
+def ask(question, *validators, **kwargs):
     """
     Asks a single question and validates it against a list of validators.
     When an answer fails validation, the complaint is printed and the question
@@ -18,9 +18,10 @@ def ask(question, *validators):
     :param validators: The list of validators that the answer must pass.
     :return: The answer, converted to its final form by the validators.
     """
+    import getpass
     answer = None
     while answer is None:
-        answer = input(question)
+        answer = getpass.getpass(question) if kwargs.get('get_pass', False) else input(question)
         for validator in validators:
             answer, complaint = validator(answer)
             if answer is None:
@@ -29,6 +30,11 @@ def ask(question, *validators):
     return answer


+def get_pass(question, *validators):
+    kwargs = dict(get_pass=True)
+    return ask(question, *validators, **kwargs)
+
+
 def choose(question, choices):
     for index, choice in enumerate(choices):
         print(f"{index+1}. {choice}")
diff --git a/python/example_code/rds/scenario_get_started_instances.py b/python/example_code/rds/scenario_get_started_instances.py
index e09cec0fb..497164af4 100644
--- a/python/example_code/rds/scenario_get_started_instances.py
+++ b/python/example_code/rds/scenario_get_started_instances.py
@@ -104,7 +104,7 @@ class RdsInstanceScenario:
         if db_inst is None:
             print("Let's create a DB instance.")
             admin_username = q.ask("Enter an administrator user name for the database: ", q.non_empty)
-            admin_password = q.ask(
+            admin_password = q.get_pass(
                 "Enter a password for the administrator (at least 8 characters): ", q.non_empty)
             engine_versions = self.instance_wrapper.get_engine_versions(
                 db_engine, parameter_group['DBParameterGroupFamily'])

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