Add missing functions/classes to __all__ (#757)

* Add CollectorRegistry&REGISTRY to __init__.py
* Set implicit_reexport to False
* Add functions/classes to __all__
* Add __all__ to exposition.py

prometheus_client/__init__.py:7: error: Module "prometheus_client.exposition" does not explicitly export attribute "make_asgi_app"; implicit reexport disabled

Signed-off-by: Yury Pliner <yury.pliner@gmail.com>

Author: Pliner

mypy.ini

@@ -1,5 +1,6 @@
 [mypy]
 exclude = prometheus_client/decorator.py|prometheus_client/twisted|tests/test_twisted.py
+implicit_reexport = False
 
 [mypy-prometheus_client.decorator]
 follow_imports = skip

prometheus_client/__init__.py

@@ -17,8 +17,35 @@
 from .process_collector import PROCESS_COLLECTOR, ProcessCollector
 from .registry import CollectorRegistry, REGISTRY
 
-__all__ = ['Counter', 'Gauge', 'Summary', 'Histogram', 'Info', 'Enum']
-
+__all__ = (
+    'CollectorRegistry',
+    'REGISTRY',
+    'Metric',
+    'Counter',
+    'Gauge',
+    'Summary',
+    'Histogram',
+    'Info',
+    'Enum',
+    'CONTENT_TYPE_LATEST',
+    'generate_latest',
+    'MetricsHandler',
+    'make_wsgi_app',
+    'make_asgi_app',
+    'start_http_server',
+    'start_wsgi_server',
+    'write_to_textfile',
+    'push_to_gateway',
+    'pushadd_to_gateway',
+    'delete_from_gateway',
+    'instance_ip_grouping_key',
+    'ProcessCollector',
+    'PROCESS_COLLECTOR',
+    'PlatformCollector',
+    'PLATFORM_COLLECTOR',
+    'GCCollector',
+    'GC_COLLECTOR',
+)
 
 if __name__ == '__main__':
     c = Counter('cc', 'A counter')

prometheus_client/exposition.py

@@ -17,6 +17,21 @@
 from .registry import REGISTRY
 from .utils import floatToGoString
 
+__all__ = (
+    'CONTENT_TYPE_LATEST',
+    'delete_from_gateway',
+    'generate_latest',
+    'instance_ip_grouping_key',
+    'make_asgi_app',
+    'make_wsgi_app',
+    'MetricsHandler',
+    'push_to_gateway',
+    'pushadd_to_gateway',
+    'start_http_server',
+    'start_wsgi_server',
+    'write_to_textfile',
+)
+
 CONTENT_TYPE_LATEST = 'text/plain; version=0.0.4; charset=utf-8'
 """Content type of the latest text format"""
 PYTHON376_OR_NEWER = sys.version_info > (3, 7, 5)