diff --git a/aula141/log.py b/aula141/log.py
index 1ef88ff..854fe2e 100644
--- a/aula141/log.py
+++ b/aula141/log.py
@@ -1,5 +1,10 @@
 # Abstração
 # Herança - é um
+from pathlib import Path
+
+LOG_FILE = Path(__file__).parent / 'log.txt'
+
+
 class Log:
     def _log(self, msg):
         raise NotImplementedError('Implemente o método log')
@@ -13,7 +18,11 @@ class Log:
 
 class LogFileMixin(Log):
     def _log(self, msg):
-        print(msg)
+        msg_fomatada = f'{msg} ({self.__class__.__name__})'
+        print('Salvando no log:', msg_fomatada)
+        with open(LOG_FILE, 'a') as arquivo:
+            arquivo.write(msg_fomatada)
+            arquivo.write('\n')
 
 
 class LogPrintMixin(Log):
@@ -22,6 +31,9 @@ class LogPrintMixin(Log):
 
 
 if __name__ == '__main__':
-    l = LogPrintMixin()
-    l.log_error('qualquer coisa')
-    l.log_success('Que legal')
+    lp = LogPrintMixin()
+    lp.log_error('qualquer coisa')
+    lp.log_success('Que legal')
+    lf = LogFileMixin()
+    lf.log_error('qualquer coisa')
+    lf.log_success('Que legal')
diff --git a/aula141/log.txt b/aula141/log.txt
new file mode 100644
index 0000000..f7144c9
--- /dev/null
+++ b/aula141/log.txt
@@ -0,0 +1,7 @@
+Success: Que legal (LogFileMixin)
+Error: qualquer coisa (LogFileMixin)
+Success: Que legal (LogFileMixin)
+Error: qualquer coisa (LogFileMixin)
+Success: Que legal (LogFileMixin)
+Error: qualquer coisa (LogFileMixin)
+Success: Que legal (LogFileMixin)
diff --git a/aula141/main.py b/aula141/main.py
index 4e7964e..07ffe2d 100644
--- a/aula141/main.py
+++ b/aula141/main.py
@@ -1 +1 @@
-from log import Log
+from log import LogFileMixin, LogPrintMixin