prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  API Gateway generates invalid IDs
  Generated IDs in API Gateway resources look like `A-Z601A-Z47201`. They contain `A-Z` instead of letters.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `moto/apigateway/utils.py`
  Content:
  ```
  1 from __future__ import unicode_literals
  2 import six
  3 import random
  4 
  5 
  6 def create_id():
  7     size = 10
  8     chars = list(range(10)) + ['A-Z']
  9     return ''.join(six.text_type(random.choice(chars)) for x in range(size))
  10
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/moto/apigateway/utils.py b/moto/apigateway/utils.py
  --- a/moto/apigateway/utils.py
  +++ b/moto/apigateway/utils.py
  @@ -1,9 +1,10 @@
   from __future__ import unicode_literals
   import six
   import random
  +import string
   
   
   def create_id():
       size = 10
  -    chars = list(range(10)) + ['A-Z']
  +    chars = list(range(10)) + list(string.ascii_lowercase)
       return ''.join(six.text_type(random.choice(chars)) for x in range(size))
  
verification_info: {"golden_diff": "diff --git a/moto/apigateway/utils.py b/moto/apigateway/utils.py\n--- a/moto/apigateway/utils.py\n+++ b/moto/apigateway/utils.py\n@@ -1,9 +1,10 @@\n from __future__ import unicode_literals\n import six\n import random\n+import string\n \n \n def create_id():\n     size = 10\n-    chars = list(range(10)) + ['A-Z']\n+    chars = list(range(10)) + list(string.ascii_lowercase)\n     return ''.join(six.text_type(random.choice(chars)) for x in range(size))\n", "issue": "API Gateway generates invalid IDs\nGenerated IDs in API Gateway resources look like `A-Z601A-Z47201`. They contain `A-Z` instead of letters.\n", "before_files": [{"content": "from __future__ import unicode_literals\nimport six\nimport random\n\n\ndef create_id():\n    size = 10\n    chars = list(range(10)) + ['A-Z']\n    return ''.join(six.text_type(random.choice(chars)) for x in range(size))\n", "path": "moto/apigateway/utils.py"}], "after_files": [{"content": "from __future__ import unicode_literals\nimport six\nimport random\nimport string\n\n\ndef create_id():\n    size = 10\n    chars = list(range(10)) + list(string.ascii_lowercase)\n    return ''.join(six.text_type(random.choice(chars)) for x in range(size))\n", "path": "moto/apigateway/utils.py"}]}