python-api-change — human mapping

API change and enhancement: Updated API client code with better error handling, type hints, and new functionality. This represents a common evolution of API client code. Key changes: - Added type hints throughout (`int`, `Optional`, `Dict`, etc.) - Updated API version from v1 to v2 in URL - Added timeout parameter to fetch_user_data - Improved error handling with try/except and raise_for_status() - Added new function get_user_info() for comprehensive user data - Enhanced return types and error reporting This shows how API client code evolves to handle new API versions and becomes more robust over time.

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Before1import requests
2
3def fetch_user_data(user_id):
  """Fetch user data from API"""
  url = f"https://api.example.com/v1/users/{user_id}"
  response = requests.get(url)
  
  if response.status_code == 200:
      return response.json()
  else:
      return None
12
13def get_user_email(user_id):
  """Get user email from API"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None

After1import requests
2from typing import Optional, Dict, Any
3
4def fetch_user_data(user_id: int, timeout: int = 10) -> Optional[Dict[str, Any]]:
  """Fetch user data from API with improved error handling"""
  url = f"https://api.example.com/v2/users/{user_id}"  # API version updated
  
  try:
      response = requests.get(url, timeout=timeout)
      response.raise_for_status()
      return response.json()
  except requests.RequestException as e:
      print(f"Error fetching user data: {e}")
      return None
15
16def get_user_email(user_id: int) -> Optional[str]:
  """Get user email from API with type hints"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None
22
23def get_user_info(user_id: int) -> Dict[str, Any]:
  """New function to get comprehensive user info"""
  user_data = fetch_user_data(user_id)
  if not user_data:
      return {'error': 'User not found'}
  
  return {
      'email': user_data.get('email'),
      'name': user_data.get('name'),
      'id': user_id
  }

Before1import requests
2
3def fetch_user_data(user_id):
  """Fetch user data from API"""
  url = f"https://api.example.com/v1/users/{user_id}"
  response = requests.get(url)
  
  if response.status_code == 200:
      return response.json()
  else:
      return None
12
13def get_user_email(user_id):
  """Get user email from API"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None

After1import requests
2from typing import Optional, Dict, Any
3
4def fetch_user_data(user_id: int, timeout: int = 10) -> Optional[Dict[str, Any]]:
  """Fetch user data from API with improved error handling"""
  url = f"https://api.example.com/v2/users/{user_id}"  # API version updated
  
  try:
      response = requests.get(url, timeout=timeout)
      response.raise_for_status()
      return response.json()
  except requests.RequestException as e:
      print(f"Error fetching user data: {e}")
      return None
15
16def get_user_email(user_id: int) -> Optional[str]:
  """Get user email from API with type hints"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None
22
23def get_user_info(user_id: int) -> Dict[str, Any]:
  """New function to get comprehensive user info"""
  user_data = fetch_user_data(user_id)
  if not user_data:
      return {'error': 'User not found'}
  
  return {
      'email': user_data.get('email'),
      'name': user_data.get('name'),
      'id': user_id
  }

Before1import requests
2
3def fetch_user_data(user_id):
  """Fetch user data from API"""
  url = f"https://api.example.com/v1/users/{user_id}"
  response = requests.get(url)
  
  if response.status_code == 200:
      return response.json()
  else:
      return None
12
13def get_user_email(user_id):
  """Get user email from API"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None

After1import requests
2from typing import Optional, Dict, Any
3
4def fetch_user_data(user_id: int, timeout: int = 10) -> Optional[Dict[str, Any]]:
  """Fetch user data from API with improved error handling"""
  url = f"https://api.example.com/v2/users/{user_id}"  # API version updated
  
  try:
      response = requests.get(url, timeout=timeout)
      response.raise_for_status()
      return response.json()
  except requests.RequestException as e:
      print(f"Error fetching user data: {e}")
      return None
15
16def get_user_email(user_id: int) -> Optional[str]:
  """Get user email from API with type hints"""
  user_data = fetch_user_data(user_id)
  if user_data:
      return user_data.get('email')
  return None
22
23def get_user_info(user_id: int) -> Dict[str, Any]:
  """New function to get comprehensive user info"""
  user_data = fetch_user_data(user_id)
  if not user_data:
      return {'error': 'User not found'}
  
  return {
      'email': user_data.get('email'),
      'name': user_data.get('name'),
      'id': user_id
  }

Before

module

import_statement

import "import"

dotted_name

identifier "requests"

function_definition

def "def"

identifier "fetch_user_data"

parameters

( "("

identifier "user_id"

) ")"

: ":"

block

expression_statement

string

string_start "\"\"\""

string_content "Fetch user data from API"

string_end "\"\"\""

expression_statement

assignment

identifier "url"

= "="

string

string_start "f\""

string_content "https://api.example.com/v1/users/"

interpolation

{ "{"

identifier "user_id"

} "}"

string_end "\""

expression_statement

assignment

identifier "response"

= "="

call

attribute

identifier "requests"

. "."

identifier "get"

argument_list

( "("

identifier "url"

) ")"

if_statement

if "if"

comparison_operator

attribute

identifier "response"

. "."

identifier "status_code"

== "=="

integer "200"

: ":"

block

return_statement

return "return"

call

attribute

identifier "response"

. "."

identifier "json"

argument_list

( "("

) ")"

else_clause

else "else"

: ":"

block

return_statement

return "return"

none "None"

function_definition

def "def"

identifier "get_user_email"

parameters

( "("

identifier "user_id"

) ")"

: ":"

block

expression_statement

string

string_start "\"\"\""

string_content "Get user email from API"

string_end "\"\"\""

expression_statement

assignment

identifier "user_data"

= "="

call

identifier "fetch_user_data"

argument_list

( "("

identifier "user_id"

) ")"

if_statement

if "if"

identifier "user_data"

: ":"

block

return_statement

return "return"

call

attribute

identifier "user_data"

. "."

identifier "get"

argument_list

( "("

string

string_start "'"

string_content "email"

string_end "'"

) ")"

return_statement

return "return"

none "None"

After

module

import_statement

import "import"

dotted_name

identifier "requests"

import_from_statement

from "from"

dotted_name

identifier "typing"

import "import"

dotted_name

identifier "Optional"

, ","

dotted_name

identifier "Dict"

, ","

dotted_name

identifier "Any"

function_definition

def "def"

identifier "fetch_user_data"

parameters

( "("

typed_parameter

identifier "user_id"

: ":"

type

identifier "int"

, ","

typed_default_parameter

identifier "timeout"

: ":"

type

identifier "int"

= "="

integer "10"

) ")"

-> "->"

type

generic_type

identifier "Optional"

type_parameter

[ "["

type

generic_type

identifier "Dict"

type_parameter

[ "["

type

identifier "str"

, ","

type

identifier "Any"

] "]"

: ":"

block

expression_statement

string

string_start "\"\"\""

string_content "Fetch user data from API with improved error handling"

string_end "\"\"\""

expression_statement

assignment

identifier "url"

= "="

string

string_start "f\""

string_content "https://api.example.com/v2/users/"

interpolation

{ "{"

identifier "user_id"

} "}"

string_end "\""

comment "# API version updated"

try_statement

try "try"

: ":"

block

expression_statement

assignment

identifier "response"

= "="

call

attribute

identifier "requests"

. "."

identifier "get"

argument_list

( "("

identifier "url"

, ","

keyword_argument

identifier "timeout"

= "="

identifier "timeout"

) ")"

expression_statement

call

attribute

identifier "response"

. "."

identifier "raise_for_status"

argument_list

( "("

) ")"

return_statement

return "return"

call

attribute

identifier "response"

. "."

identifier "json"

argument_list

( "("

) ")"

except_clause

except "except"

as_pattern

attribute

identifier "requests"

. "."

identifier "RequestException"

as "as"

as_pattern_target

identifier "e"

: ":"

block

expression_statement

call

identifier "print"

argument_list

( "("

string

string_start "f\""

string_content "Error fetching user data: "

interpolation

{ "{"

identifier "e"

} "}"

string_end "\""

) ")"

return_statement

return "return"

none "None"

function_definition

def "def"

identifier "get_user_email"

parameters

( "("

typed_parameter

identifier "user_id"

: ":"

type

identifier "int"

) ")"

-> "->"

type

generic_type

identifier "Optional"

type_parameter

[ "["

type

identifier "str"

] "]"

: ":"

block

expression_statement

string

string_start "\"\"\""

string_content "Get user email from API with type hints"

string_end "\"\"\""

expression_statement

assignment

identifier "user_data"

= "="

call

identifier "fetch_user_data"

argument_list

( "("

identifier "user_id"

) ")"

if_statement

if "if"

identifier "user_data"

: ":"

block

return_statement

return "return"

call

attribute

identifier "user_data"

. "."

identifier "get"

argument_list

( "("

string

string_start "'"

string_content "email"

string_end "'"

) ")"

return_statement

return "return"

none "None"

function_definition

def "def"

identifier "get_user_info"

parameters

( "("

typed_parameter

identifier "user_id"

: ":"

type

identifier "int"

) ")"

-> "->"

type

generic_type

identifier "Dict"

type_parameter

[ "["

type

identifier "str"

, ","

type

identifier "Any"

] "]"

: ":"

block

expression_statement

string

string_start "\"\"\""

string_content "New function to get comprehensive user info"

string_end "\"\"\""

expression_statement

assignment

identifier "user_data"

= "="

call

identifier "fetch_user_data"

argument_list

( "("

identifier "user_id"

) ")"

if_statement

if "if"

not_operator

not "not"

identifier "user_data"

: ":"

block

return_statement

return "return"

dictionary

{ "{"

pair

string

string_start "'"

string_content "error"

string_end "'"

: ":"

string

string_start "'"

string_content "User not found"

string_end "'"

} "}"

return_statement

return "return"

dictionary

{ "{"

pair

string

string_start "'"

string_content "email"

string_end "'"

: ":"

call

attribute

identifier "user_data"

. "."

identifier "get"

argument_list

( "("

string

string_start "'"

string_content "email"

string_end "'"

) ")"

, ","

pair

string

string_start "'"

string_content "name"

string_end "'"

: ":"

call

attribute

identifier "user_data"

. "."

identifier "get"

argument_list

( "("

string

string_start "'"

string_content "name"

string_end "'"

) ")"

, ","

pair

string

string_start "'"

string_content "id"

string_end "'"

: ":"

identifier "user_id"

} "}"