Merge pull request #5 from petereon/high_cpu_usage_fix

fix: removing the busy waiting block

.github/workflows/python-test.yml

@@ -5,7 +5,8 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
-
+env:
+  POETRY_VERSION: "<1.4.0"
 jobs:
   build:
     if: |
@@ -27,7 +28,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install poetry poethepoet
+        python -m pip install "poetry${{ env.POETRY_VERSION }}" poethepoet
         poetry install
     - name: Test with ward
       run: |

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "python-yakh"
-version = "0.3.1"
+version = "0.3.2"
 description = "Yet Another Keypress Handler"
 authors = ["petereon <[email protected]>"]
 license = 'MIT'
@@ -21,10 +21,10 @@ python = "^3.7.8"
 
 
 [tool.poetry.group.dev.dependencies]
-ward = "^0.67.0b0"
-ward-coverage = "^0.3.0"
-black = "^22.10.0"
-pylint = "^2.15.6"
+ward = "*"
+ward-coverage = "*"
+black = "*"
+pylint = "*"
 
 [build-system]
 requires = ["poetry-core"]

yakh/_yakh.py

@@ -1,3 +1,4 @@
+import select
 import sys
 from typing import List
 from yakh.key._key import Key
@@ -36,14 +37,12 @@ def __get_key() -> str:
         tty.setraw(fd_input)
         ch_str = ""
         try:
+            select.select([sys.stdin], [], [], None)
             while True:
-                if ch_str != "":
+                ch_stri = sys.stdin.read(1)
+                if ch_stri == "":
                     break
-                while True:
-                    ch_stri = sys.stdin.read(1)
-                    if ch_stri == "":
-                        break
-                    ch_str += ch_stri
+                ch_str += ch_stri
         except Exception:
             pass
         finally: