関連ワード:  python remove all characters from string except numbers    python remove all characters from string except    python remove all characters from string except numbers and dots    python remove special characters from string except space    python remove special characters from string except underscore    python remove all characters from string except letters    remove all characters from string except alphabets python    python string replace all characters except    remove all characters from a string except integers python  
結果 : python remove all characters from string except