Coding style and broken links (#288)

* Fix 2 blank line between function definitions

* Fix broken links

Author: Arash Fatahzade

CONTRIBUTING.md

@@ -106,14 +106,14 @@ $ pip install -r requirements.txt  # Install additional tools and dependencies
 
 We use [pylint](https://pylint.org/) for verifying source code format, and
 enforcing other Python programming best practices.
-There is a pylint configuration file ([`.pylintrc`](../.pylintrc)) at the root of this Git
+There is a pylint configuration file ([`.pylintrc`](.pylintrc)) at the root of this Git
 repository. This enables you to invoke pylint directly from the command line:
 
 ```
 pylint firebase_admin
 ```
 
-However, it is recommended that you use the [`lint.sh`](../lint.sh) bash script to invoke
+However, it is recommended that you use the [`lint.sh`](lint.sh) bash script to invoke
 pylint. This script will run the linter on both `firebase_admin` and the corresponding
 `tests` module. It suprresses some of the noisy warnings that get generated
 when running pylint on test code. Note that by default `lint.sh` will only
@@ -226,7 +226,7 @@ pyenv install 3.3.0        # install Python 3.3.0
 pyenv install pypy2-5.6.0  # install pypy2
 ```
 
-Refer to the [`tox.ini`](../tox.ini) file for a list of target environments that we usually test.
+Refer to the [`tox.ini`](tox.ini) file for a list of target environments that we usually test.
 Use pyenv to install all the required Python versions on your workstation. Verify that they are
 installed by running the following command:
 

firebase_admin/auth.py

@@ -121,6 +121,7 @@ def create_custom_token(uid, developer_claims=None, app=None):
     except _token_gen.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def verify_id_token(id_token, app=None, check_revoked=False):
     """Verifies the signature and data for the provided JWT.
 
@@ -150,6 +151,7 @@ def verify_id_token(id_token, app=None, check_revoked=False):
         _check_jwt_revoked(verified_claims, _ID_TOKEN_REVOKED, 'ID token', app)
     return verified_claims
 
+
 def create_session_cookie(id_token, expires_in, app=None):
     """Creates a new Firebase session cookie from the given ID token and options.
 
@@ -174,6 +176,7 @@ def create_session_cookie(id_token, expires_in, app=None):
     except _token_gen.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def verify_session_cookie(session_cookie, check_revoked=False, app=None):
     """Verifies a Firebase session cookie.
 
@@ -199,6 +202,7 @@ def verify_session_cookie(session_cookie, check_revoked=False, app=None):
         _check_jwt_revoked(verified_claims, _SESSION_COOKIE_REVOKED, 'session cookie', app)
     return verified_claims
 
+
 def revoke_refresh_tokens(uid, app=None):
     """Revokes all refresh tokens for an existing user.
 
@@ -214,6 +218,7 @@ def revoke_refresh_tokens(uid, app=None):
     user_manager = _get_auth_service(app).user_manager
     user_manager.update_user(uid, valid_since=int(time.time()))
 
+
 def get_user(uid, app=None):
     """Gets the user data corresponding to the specified user ID.
 
@@ -236,6 +241,7 @@ def get_user(uid, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def get_user_by_email(email, app=None):
     """Gets the user data corresponding to the specified user email.
 
@@ -281,6 +287,7 @@ def get_user_by_phone_number(phone_number, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def list_users(page_token=None, max_results=_user_mgt.MAX_LIST_USERS_RESULTS, app=None):
     """Retrieves a page of user accounts from a Firebase project.
 
@@ -381,6 +388,7 @@ def update_user(uid, **kwargs):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def set_custom_user_claims(uid, custom_claims, app=None):
     """Sets additional claims on an existing user account.
 
@@ -407,6 +415,7 @@ def set_custom_user_claims(uid, custom_claims, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def delete_user(uid, app=None):
     """Deletes the user identified by the specified user ID.
 
@@ -424,6 +433,7 @@ def delete_user(uid, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def import_users(users, hash_alg=None, app=None):
     """Imports the specified list of users into Firebase Auth.
 
@@ -453,6 +463,7 @@ def import_users(users, hash_alg=None, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def generate_password_reset_link(email, action_code_settings=None, app=None):
     """Generates the out-of-band email action link for password reset flows for the specified email
     address.
@@ -477,6 +488,7 @@ def generate_password_reset_link(email, action_code_settings=None, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def generate_email_verification_link(email, action_code_settings=None, app=None):
     """Generates the out-of-band email action link for email verification flows for the specified
     email address.
@@ -501,6 +513,7 @@ def generate_email_verification_link(email, action_code_settings=None, app=None)
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def generate_sign_in_with_email_link(email, action_code_settings, app=None):
     """Generates the out-of-band email action link for email link sign-in flows, using the action
     code settings provided.
@@ -525,6 +538,7 @@ def generate_sign_in_with_email_link(email, action_code_settings, app=None):
     except _user_mgt.ApiCallError as error:
         raise AuthError(error.code, str(error), error.detail)
 
+
 def _check_jwt_revoked(verified_claims, error_code, label, app):
     user = get_user(verified_claims.get('uid'), app=app)
     if verified_claims.get('iat') * 1000 < user.tokens_valid_after_timestamp: