Lint code

tasks/build.py

@@ -347,7 +347,9 @@ def download_pr(repo_name, branch_name, pr, arch_job_dir):
     # - 'git apply' diff file
     git_clone_cmd = ' '.join(['git clone', f'https://github.com/{repo_name}', arch_job_dir])
     log(f'cloning with command {git_clone_cmd}')
-    clone_output, clone_error, clone_exit_code = run_cmd(git_clone_cmd, "Clone repo", arch_job_dir, raise_on_error=False)
+    clone_output, clone_error, clone_exit_code = run_cmd(
+        git_clone_cmd, "Clone repo", arch_job_dir, raise_on_error=False
+        )
     if clone_exit_code != 0:
         return clone_output, clone_error, clone_exit_code
 
@@ -356,23 +358,28 @@ def download_pr(repo_name, branch_name, pr, arch_job_dir):
         branch_name,
     ])
     log(f'checking out with command {git_checkout_cmd}')
-    checkout_output, checkout_err, checkout_exit_code = run_cmd(git_checkout_cmd,
-                                                                "checkout branch '%s'" % branch_name, arch_job_dir, raise_on_error=False)
+    checkout_output, checkout_err, checkout_exit_code = run_cmd(
+        git_checkout_cmd, "checkout branch '%s'" % branch_name, arch_job_dir, raise_on_error=False
+        )
     if checkout_exit_code != 0:
-        return  checkout_output, checkout_err, checkout_exit_code
+        return checkout_output, checkout_err, checkout_exit_code
 
     curl_cmd = f'curl -L https://github.com/{repo_name}/pull/{pr.number}.diff > {pr.number}.diff'
     log(f'curl with command {curl_cmd}')
-    curl_output, curl_error, curl_exit_code = run_cmd(curl_cmd, "Obtain patch", arch_job_dir, raise_on_error=False)
+    curl_output, curl_error, curl_exit_code = run_cmd(
+        curl_cmd, "Obtain patch", arch_job_dir, raise_on_error=False
+        )
     if curl_exit_code != 0:
-        return  curl_output, curl_error, curl_exit_code
-    
+        return curl_output, curl_error, curl_exit_code
+
     git_apply_cmd = f'git apply {pr.number}.diff'
     log(f'git apply with command {git_apply_cmd}')
-    git_apply_output, git_apply_error, git_apply_exit_code = run_cmd(git_apply_cmd, "Apply patch", arch_job_dir, raise_on_error=False)
+    git_apply_output, git_apply_error, git_apply_exit_code = run_cmd(
+        git_apply_cmd, "Apply patch", arch_job_dir, raise_on_error=False
+        )
     if git_apply_exit_code != 0:
         return git_apply_output, git_apply_error, git_apply_exit_code
-    
+
 
 def comment_download_pr(base_repo_name, pr, download_pr_exit_code, download_pr_error):
     """
@@ -381,26 +388,31 @@ def comment_download_pr(base_repo_name, pr, download_pr_exit_code, download_pr_e
     Args:
         base_repo_name (string): name of the repository (format USER_OR_ORGANISATION/REPOSITORY)
         pr (github.PullRequest.PullRequest): instance representing the pull request
-        download_pr_exit_code (int): exit code from download_pr(). 0 if all tasks were successful, 
-            otherwise it corresponds to the error codes of git clone, git checkout, git apply, or curl.  
-        download_pr_error (string): none, or the output of stderr from git clone, git checkout, git apply or curl. 
+        download_pr_exit_code (int): exit code from download_pr(). 0 if all tasks were successful,
+            otherwise it corresponds to the error codes of git clone, git checkout, git apply, or curl.
+        download_pr_error (string): none, or the output of stderr from git clone, git checkout, git apply or curl.
 
     Return:
         None (implicitly). A comment is created in the appropriate PR.
-        
+
     """
     if download_pr_exit_code != 0:
         fn = sys._getframe().f_code.co_name
         download_comment = (f"`{download_pr_error}`"
-                           f"\nUnable to download or merge changes between the source branch and the destination branch.\n"
-                           f"\nTip: This can usually be resolved by syncing your branch and resolving any merge conflicts.")
-        download_comment = pr_comments.create_comment(repo_name=base_repo_name, pr_number=pr.number, comment=download_comment)
+                            f"\nUnable to download or merge changes between the source"
+                            " branch and the destination branch.\n"
+                            f"\nTip: This can usually be resolved by syncing your"
+                            " branch and resolving any merge conflicts.")
+        download_comment = pr_comments.create_comment(
+            repo_name=base_repo_name, pr_number=pr.number, comment=download_comment
+            )
         if download_comment:
             log(f"{fn}(): created PR issue comment with id {download_comment.id}")
         else:
             log(f"{fn}(): failed to create PR issue comment")
         raise ValueError("Unable to download PR and/or sync changes")
 
+
 def apply_cvmfs_customizations(cvmfs_customizations, arch_job_dir):
     """
     Apply cvmfs_customizations to job