Fix import from files

pharma_datamatrix/expiry_date_validation.py

@@ -8,7 +8,6 @@ The logic also allows 00 for DD, this refers to the last day of the month.
 
 """
 
-
 from datetime import datetime
 
 

pharma_datamatrix/gs1_gtin.py

@@ -16,9 +16,9 @@ character is <GS> Group-Separator.
 """
 
 # The GTIN validation module
-from gs1_gtin_validation import gtin_check
+from .gs1_gtin_validation import gtin_check
 # The Expiry validation module
-from expiry_date_validation import expiry_date_check
+from .expiry_date_validation import expiry_date_check
 
 result = {'SCHEME': 'GTIN'}
 

pharma_datamatrix/ifa_ppn.py

@@ -24,8 +24,8 @@ S	        Serial number	12345ABCDEF98765 (between 12-20 chars)
 """
 
 # The Expiry validation module
-from expiry_date_validation import expiry_date_check
-from ifa_ppn_validation import ppn_check
+from .expiry_date_validation import expiry_date_check
+from .ifa_ppn_validation import ppn_check
 
 result = {'SCHEME': 'PPN'}
 

pharma_datamatrix/pharma_datamatrix.py

@@ -12,8 +12,8 @@ Possible knowed separators:
 
 """
 
-from gs1_gtin import gs1_gtin
-from ifa_ppn import ifa_ppn
+from .gs1_gtin import gs1_gtin
+from .ifa_ppn import ifa_ppn
 
 
 def pharma_datamatrix(barcode: str, separator=29) -> dict: