chore: import upstream snapshot with attribution

scripts/import_linter/import_linter.py

@@ -0,0 +1,56 @@
+import os
+import subprocess
+import multiprocessing
+import importlib
+
+git_base = subprocess.check_output(['git', 'rev-parse', '--show-toplevel']).decode().strip()
+
+
+def walk_and_ignore_pycache(directory):
+    list = []
+    for root, dirnames, files in os.walk(directory, topdown=True):
+        # This line removes any __pycache__ directories from the list
+        dirnames[:] = [d for d in dirnames if d != '__pycache__' and d != 'tests' and d != 'data']
+        filenames = [f for f in files if f.endswith('.py') and not f.startswith('__init__')]
+        for filename in filenames:
+            # Process files as you would like
+            list.append(os.path.join(root, filename))
+    return list
+
+
+def file_to_import(file):
+    push_file = []
+    head_tail = os.path.split(file)
+    while head_tail[1] != "promptflow" and head_tail[0] != "":
+        if head_tail[1].endswith(".py"):
+            push_file.insert(0, head_tail[1][:-3])
+        else:
+            push_file.insert(0, head_tail[1])
+        file = head_tail[0]
+        head_tail = os.path.split(file)
+    push_file.insert(0, "promptflow")
+    return ".".join(push_file)
+
+
+# If there is an import error, the process will exit with a non-zero exit code
+# Find this importlib.import_module as the keyword to search for the error
+# The error below this is the import error / circular import error.
+def subprocess_check_python_import(file):
+    print(f'Checking import of {file} on process ID: {os.getpid()}')
+    importlib.import_module(file)
+
+
+def process_file(file):
+    import_name = file_to_import(file)
+    subprocess_check_python_import(import_name)
+
+
+if __name__ == '__main__':
+    pool = multiprocessing.Pool()
+    list = walk_and_ignore_pycache(git_base + "/src/promptflow-tracing/")
+    list.extend(walk_and_ignore_pycache(git_base + "/src/promptflow-core/"))
+    list.extend(walk_and_ignore_pycache(git_base + "/src/promptflow-devkit/"))
+    list.extend(walk_and_ignore_pycache(git_base + "/src/promptflow-azure/"))
+    pool.map(process_file, list)
+    pool.close()
+    pool.join()