Compatibility with Python 3.7.

ansible_parallel.py

@@ -58,7 +58,10 @@ async def run_playbook(playbook, args, results):
         env={**os.environ, "ANSIBLE_FORCE_COLOR": "1"},
     )
     task = []
-    while line := (await process.stdout.readline()).decode():
+    while True:
+        line = (await process.stdout.readline()).decode()
+        if not line:
+            break
         if line == "\n":
             chunk = "".join(task) + line
             await results.put(prepare_chunk(playbook, chunk))
@@ -93,7 +96,10 @@ async def show_progression(results):
     frameno = 0
     print(DISABLE_CURSOR, end="")
     try:
-        while result := await results.get():
+        while True:
+            result = await results.get()
+            if not result:
+                break
             frameno += 1
             msgtype, playbook, msg = result
             if msgtype == "START":

setup.cfg

@@ -15,12 +15,13 @@ classifiers =
   License :: OSI Approved :: MIT License
   Natural Language :: English
   Programming Language :: Python :: 3
+  Programming Language :: Python :: 3.7
   Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9
 
 [options]
 py_modules = ansible_parallel
-python_requires = >= 3.8
+python_requires = >= 3.7
 
 [options.entry_points]
 console_scripts = ansible-parallel=ansible_parallel:main