Fix python lint issues in Tools/elf2hex.py

Tools/elf2hex.py

@@ -8,8 +8,8 @@
 # See https://swift.org/LICENSE.txt for license information
 
 #
-# elf2hex -- Converts a statically-linked ELF executable into an "Intel HEX" file format suitable for flashing onto some
-# embedded devices.
+# elf2hex -- Converts a statically-linked ELF executable into an "Intel HEX"
+# file format suitable for flashing onto some embedded devices.
 #
 # Usage:
 #   $ elf2hex.py <input> <output> [--symbol-map <output>]
@@ -19,11 +19,12 @@
 #
 
 import argparse
-import os
-import pathlib
 import json
+import pathlib
+
 import elftools.elf.elffile
 
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('input')
@@ -38,7 +39,7 @@ def emitrecord(record):
         checksum = 0
         pos = 0
         while pos < len(record):
-            checksum = (checksum + int(record[pos:pos+2], 16)) % 256
+            checksum = (checksum + int(record[pos:pos + 2], 16)) % 256
             pos += 2
         checksum = (256 - checksum) % 256
         outf.write((":" + record + f"{checksum:02X}" + "\n").encode())
@@ -47,39 +48,43 @@ def emit(vmaddr, data):
         pos = 0
         while pos < len(data):
             chunklen = min(16, len(data) - pos)
-            chunk = data[pos:pos+chunklen]
+            chunk = data[pos:pos + chunklen]
             chunkhex = chunk.hex().upper()
 
             assert vmaddr < 0x100000000, f"vmaddr: {vmaddr:x}"
             vmaddr_high = (vmaddr >> 16) & 0xffff
-            recordtype = "04" # Extended Linear Address
+            recordtype = "04"  # Extended Linear Address
             emitrecord(f"{2:02X}{0:04X}{recordtype}{vmaddr_high:04X}")
 
             vmaddr_low = vmaddr & 0xffff
-            recordtype = "00" # Data
+            recordtype = "00"  # Data
             emitrecord(f"{chunklen:02X}{vmaddr_low:04X}{recordtype}{chunkhex}")
 
             pos += chunklen
             vmaddr += chunklen
 
     elffile = elftools.elf.elffile.ELFFile(inf)
     for segment in elffile.iter_segments():
-        if segment.header.p_type != "PT_LOAD": continue
+        if segment.header.p_type != "PT_LOAD":
+            continue
         vmaddr = segment.header.p_paddr
         data = segment.data()
         emit(segment.header.p_paddr, data)
 
     chunklen = 0
     vmaddr = 0
-    recordtype = "01" # EOF
+    recordtype = "01"  # EOF
     emitrecord(f"{chunklen:02X}{vmaddr:04X}{recordtype}")
 
     symbol_map = {}
     symtab_section = elffile.get_section_by_name(".symtab")
     for s in symtab_section.iter_symbols():
-        if s.entry.st_info.type not in ["STT_FUNC", "STT_NOTYPE"]: continue
-        if s.entry.st_shndx == "SHN_ABS": continue
-        if s.name == "": continue
+        if s.entry.st_info.type not in ["STT_FUNC", "STT_NOTYPE"]:
+            continue
+        if s.entry.st_shndx == "SHN_ABS":
+            continue
+        if s.name == "":
+            continue
         symbol_map[s.name] = s.entry.st_value
 
     if args.symbol_map is not None:
@@ -88,5 +93,6 @@ def emit(vmaddr, data):
     inf.close()
     outf.close()
 
+
 if __name__ == '__main__':
     main()