Use explicit importing over relative importing

Helps when the package is used by a different script

tja2fumen/converters.py

@@ -1,7 +1,7 @@
 from copy import deepcopy
 
-from utils import computeSoulGaugeByte
-from constants import TJA_NOTE_TYPES, DIFFICULTY_BYTES, unknownHeaderSample
+from tja2fumen.utils import computeSoulGaugeByte
+from tja2fumen.constants import TJA_NOTE_TYPES, DIFFICULTY_BYTES, unknownHeaderSample
 
 # Filler metadata that the `writeFumen` function expects
 default_note = {'type': '', 'pos': 0.0, 'item': 0, 'padding': 0.0,

tja2fumen/main.py

@@ -1,7 +1,7 @@
-from parsers import readFumen, parseTJA
-from writers import writeFumen
-from converters import convertTJAToFumen
-from utils import checkMismatchedBytes
+from tja2fumen.parsers import readFumen, parseTJA
+from tja2fumen.writers import writeFumen
+from tja2fumen.converters import convertTJAToFumen
+from tja2fumen.utils import checkMismatchedBytes
 
 tja2fumen_version = "v0.1"
 

tja2fumen/parsers.py

@@ -1,8 +1,8 @@
 import os
 import re
 
-from utils import readStruct, getBool, shortHex, nameValue, debugPrint, checkValidHeader, validateHeaderMetadata
-from constants import (
+from tja2fumen.utils import readStruct, getBool, shortHex, nameValue, debugPrint, checkValidHeader, validateHeaderMetadata
+from tja2fumen.constants import (
     # TJA constants
     HEADER_GLOBAL, HEADER_COURSE, BRANCH_COMMANDS, MEASURE_COMMANDS, COMMAND,
     # Fumen constants

tja2fumen/utils.py

@@ -2,7 +2,7 @@ import sys
 import struct
 import math
 
-from constants import simpleHeaders, byte_strings
+from tja2fumen.constants import simpleHeaders, byte_strings
 
 
 def checkValidHeader(header):

tja2fumen/writers.py

@@ -1,5 +1,5 @@
-from utils import writeStruct, putBool
-from constants import simpleHeaders, branchNames, typeNotes
+from tja2fumen.utils import writeStruct, putBool
+from tja2fumen.constants import simpleHeaders, branchNames, typeNotes
 
 
 def writeFumen(file, song):