Corrected small errors

tsg/main.py

@@ -215,7 +215,7 @@ class Gtf:
         )
         self.df = pd.concat([filter_df(chunk) for chunk in reader])
 
-    def from_dataframe(df: pd.DataFrame) -> None:
+    def from_dataframe(self, df: pd.DataFrame) -> None:
         """ Checks which columns belong to the free-text part of the GTF-file. 
         
         Checks if there are no columns called free-text and if so, sets the value of self.parsed to TRUE.
@@ -316,7 +316,7 @@ class TranscriptGenerator:
 
         return inclusion_arr
 
-    def _get_unique_inclusions(self) -> (list, np.array, np.array):
+    def _get_unique_inclusions(self) -> tuple(list, np.array, np.array):
         """Inclusion of unique intron inclusion via arrays and counts and name generation of each unique count.
         
         Args: