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micropython/tools/mpy-tool.py

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#!/usr/bin/env python3
#
# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2016 Damien P. George
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# Python 2/3 compatibility code
from __future__ import print_function
import platform
if platform.python_version_tuple()[0] == '2':
str_cons = lambda val, enc=None: val
bytes_cons = lambda val, enc=None: bytearray(val)
is_str_type = lambda o: type(o) is str
is_bytes_type = lambda o: type(o) is bytearray
is_int_type = lambda o: type(o) is int or type(o) is long
else:
str_cons = str
bytes_cons = bytes
is_str_type = lambda o: type(o) is str
is_bytes_type = lambda o: type(o) is bytes
is_int_type = lambda o: type(o) is int
# end compatibility code
import sys
import struct
from collections import namedtuple
sys.path.append(sys.path[0] + '/../py')
import makeqstrdata as qstrutil
class FreezeError(Exception):
def __init__(self, rawcode, msg):
self.rawcode = rawcode
self.msg = msg
def __str__(self):
return 'error while freezing %s: %s' % (self.rawcode.source_file, self.msg)
class Config:
MPY_VERSION = 3
MICROPY_LONGINT_IMPL_NONE = 0
MICROPY_LONGINT_IMPL_LONGLONG = 1
MICROPY_LONGINT_IMPL_MPZ = 2
config = Config()
MP_OPCODE_BYTE = 0
MP_OPCODE_QSTR = 1
MP_OPCODE_VAR_UINT = 2
MP_OPCODE_OFFSET = 3
# extra bytes:
MP_BC_MAKE_CLOSURE = 0x62
MP_BC_MAKE_CLOSURE_DEFARGS = 0x63
MP_BC_RAISE_VARARGS = 0x5c
# extra byte if caching enabled:
MP_BC_LOAD_NAME = 0x1c
MP_BC_LOAD_GLOBAL = 0x1d
MP_BC_LOAD_ATTR = 0x1e
MP_BC_STORE_ATTR = 0x26
def make_opcode_format():
def OC4(a, b, c, d):
return a | (b << 2) | (c << 4) | (d << 6)
U = 0
B = 0
Q = 1
V = 2
O = 3
return bytes_cons((
# this table is taken verbatim from py/bc.c
OC4(U, U, U, U), # 0x00-0x03
OC4(U, U, U, U), # 0x04-0x07
OC4(U, U, U, U), # 0x08-0x0b
OC4(U, U, U, U), # 0x0c-0x0f
OC4(B, B, B, U), # 0x10-0x13
OC4(V, U, Q, V), # 0x14-0x17
OC4(B, V, V, Q), # 0x18-0x1b
OC4(Q, Q, Q, Q), # 0x1c-0x1f
OC4(B, B, V, V), # 0x20-0x23
OC4(Q, Q, Q, B), # 0x24-0x27
OC4(V, V, Q, Q), # 0x28-0x2b
OC4(U, U, U, U), # 0x2c-0x2f
OC4(B, B, B, B), # 0x30-0x33
OC4(B, O, O, O), # 0x34-0x37
OC4(O, O, U, U), # 0x38-0x3b
OC4(U, O, B, O), # 0x3c-0x3f
OC4(O, B, B, O), # 0x40-0x43
OC4(B, B, O, B), # 0x44-0x47
OC4(U, U, U, U), # 0x48-0x4b
OC4(U, U, U, U), # 0x4c-0x4f
OC4(V, V, U, V), # 0x50-0x53
OC4(B, U, V, V), # 0x54-0x57
OC4(V, V, V, B), # 0x58-0x5b
OC4(B, B, B, U), # 0x5c-0x5f
OC4(V, V, V, V), # 0x60-0x63
OC4(V, V, V, V), # 0x64-0x67
OC4(Q, Q, B, U), # 0x68-0x6b
OC4(U, U, U, U), # 0x6c-0x6f
OC4(B, B, B, B), # 0x70-0x73
OC4(B, B, B, B), # 0x74-0x77
OC4(B, B, B, B), # 0x78-0x7b
OC4(B, B, B, B), # 0x7c-0x7f
OC4(B, B, B, B), # 0x80-0x83
OC4(B, B, B, B), # 0x84-0x87
OC4(B, B, B, B), # 0x88-0x8b
OC4(B, B, B, B), # 0x8c-0x8f
OC4(B, B, B, B), # 0x90-0x93
OC4(B, B, B, B), # 0x94-0x97
OC4(B, B, B, B), # 0x98-0x9b
OC4(B, B, B, B), # 0x9c-0x9f
OC4(B, B, B, B), # 0xa0-0xa3
OC4(B, B, B, B), # 0xa4-0xa7
OC4(B, B, B, B), # 0xa8-0xab
OC4(B, B, B, B), # 0xac-0xaf
OC4(B, B, B, B), # 0xb0-0xb3
OC4(B, B, B, B), # 0xb4-0xb7
OC4(B, B, B, B), # 0xb8-0xbb
OC4(B, B, B, B), # 0xbc-0xbf
OC4(B, B, B, B), # 0xc0-0xc3
OC4(B, B, B, B), # 0xc4-0xc7
OC4(B, B, B, B), # 0xc8-0xcb
OC4(B, B, B, B), # 0xcc-0xcf
OC4(B, B, B, B), # 0xd0-0xd3
OC4(U, U, U, B), # 0xd4-0xd7
OC4(B, B, B, B), # 0xd8-0xdb
OC4(B, B, B, B), # 0xdc-0xdf
OC4(B, B, B, B), # 0xe0-0xe3
OC4(B, B, B, B), # 0xe4-0xe7
OC4(B, B, B, B), # 0xe8-0xeb
OC4(B, B, B, B), # 0xec-0xef
OC4(B, B, B, B), # 0xf0-0xf3
OC4(B, B, B, B), # 0xf4-0xf7
OC4(U, U, U, U), # 0xf8-0xfb
OC4(U, U, U, U), # 0xfc-0xff
))
# this function mirrors that in py/bc.c
def mp_opcode_format(bytecode, ip, opcode_format=make_opcode_format()):
opcode = bytecode[ip]
ip_start = ip
f = (opcode_format[opcode >> 2] >> (2 * (opcode & 3))) & 3
if f == MP_OPCODE_QSTR:
ip += 3
else:
extra_byte = (
opcode == MP_BC_RAISE_VARARGS
or opcode == MP_BC_MAKE_CLOSURE
or opcode == MP_BC_MAKE_CLOSURE_DEFARGS
or config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE and (
opcode == MP_BC_LOAD_NAME
or opcode == MP_BC_LOAD_GLOBAL
or opcode == MP_BC_LOAD_ATTR
or opcode == MP_BC_STORE_ATTR
)
)
ip += 1
if f == MP_OPCODE_VAR_UINT:
while bytecode[ip] & 0x80 != 0:
ip += 1
ip += 1
elif f == MP_OPCODE_OFFSET:
ip += 2
ip += extra_byte
return f, ip - ip_start
def decode_uint(bytecode, ip):
unum = 0
while True:
val = bytecode[ip]
ip += 1
unum = (unum << 7) | (val & 0x7f)
if not (val & 0x80):
break
return ip, unum
def extract_prelude(bytecode):
ip = 0
ip, n_state = decode_uint(bytecode, ip)
ip, n_exc_stack = decode_uint(bytecode, ip)
scope_flags = bytecode[ip]; ip += 1
n_pos_args = bytecode[ip]; ip += 1
n_kwonly_args = bytecode[ip]; ip += 1
n_def_pos_args = bytecode[ip]; ip += 1
ip2, code_info_size = decode_uint(bytecode, ip)
ip += code_info_size
while bytecode[ip] != 0xff:
ip += 1
ip += 1
# ip now points to first opcode
# ip2 points to simple_name qstr
return ip, ip2, (n_state, n_exc_stack, scope_flags, n_pos_args, n_kwonly_args, n_def_pos_args, code_info_size)
class RawCode:
# a set of all escaped names, to make sure they are unique
escaped_names = set()
def __init__(self, bytecode, qstrs, objs, raw_codes):
# set core variables
self.bytecode = bytecode
self.qstrs = qstrs
self.objs = objs
self.raw_codes = raw_codes
# extract prelude
self.ip, self.ip2, self.prelude = extract_prelude(self.bytecode)
self.simple_name = self._unpack_qstr(self.ip2)
self.source_file = self._unpack_qstr(self.ip2 + 2)
def _unpack_qstr(self, ip):
qst = self.bytecode[ip] | self.bytecode[ip + 1] << 8
return global_qstrs[qst]
def dump(self):
# dump children first
for rc in self.raw_codes:
rc.freeze('')
# TODO
def freeze(self, parent_name):
self.escaped_name = parent_name + self.simple_name.qstr_esc
# make sure the escaped name is unique
i = 2
while self.escaped_name in RawCode.escaped_names:
self.escaped_name = parent_name + self.simple_name.qstr_esc + str(i)
i += 1
RawCode.escaped_names.add(self.escaped_name)
# emit children first
for rc in self.raw_codes:
rc.freeze(self.escaped_name + '_')
# generate bytecode data
print()
print('// frozen bytecode for file %s, scope %s%s' % (self.source_file.str, parent_name, self.simple_name.str))
print('STATIC ', end='')
if not config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE:
print('const ', end='')
print('byte bytecode_data_%s[%u] = {' % (self.escaped_name, len(self.bytecode)))
print(' ', end='')
for i in range(self.ip2):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
print(' ', self.simple_name.qstr_id, '& 0xff,', self.simple_name.qstr_id, '>> 8,')
print(' ', self.source_file.qstr_id, '& 0xff,', self.source_file.qstr_id, '>> 8,')
print(' ', end='')
for i in range(self.ip2 + 4, self.ip):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
ip = self.ip
while ip < len(self.bytecode):
f, sz = mp_opcode_format(self.bytecode, ip)
if f == 1:
qst = self._unpack_qstr(ip + 1).qstr_id
print(' ', '0x%02x,' % self.bytecode[ip], qst, '& 0xff,', qst, '>> 8,')
else:
print(' ', ''.join('0x%02x, ' % self.bytecode[ip + i] for i in range(sz)))
ip += sz
print('};')
# generate constant objects
for i, obj in enumerate(self.objs):
obj_name = 'const_obj_%s_%u' % (self.escaped_name, i)
if obj is Ellipsis:
print('#define %s mp_const_ellipsis_obj' % obj_name)
elif is_str_type(obj) or is_bytes_type(obj):
if is_str_type(obj):
obj = bytes_cons(obj, 'utf8')
obj_type = 'mp_type_str'
else:
obj_type = 'mp_type_bytes'
print('STATIC const mp_obj_str_t %s = {{&%s}, %u, %u, (const byte*)"%s"};'
% (obj_name, obj_type, qstrutil.compute_hash(obj, config.MICROPY_QSTR_BYTES_IN_HASH),
len(obj), ''.join(('\\x%02x' % b) for b in obj)))
elif is_int_type(obj):
if config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_NONE:
# TODO check if we can actually fit this long-int into a small-int
raise FreezeError(self, 'target does not support long int')
elif config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_LONGLONG:
# TODO
raise FreezeError(self, 'freezing int to long-long is not implemented')
elif config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_MPZ:
neg = 0
if obj < 0:
obj = -obj
neg = 1
bits_per_dig = config.MPZ_DIG_SIZE
digs = []
z = obj
while z:
digs.append(z & ((1 << bits_per_dig) - 1))
z >>= bits_per_dig
ndigs = len(digs)
digs = ','.join(('%#x' % d) for d in digs)
print('STATIC const mp_obj_int_t %s = {{&mp_type_int}, '
'{.neg=%u, .fixed_dig=1, .alloc=%u, .len=%u, .dig=(uint%u_t*)(const uint%u_t[]){%s}}};'
% (obj_name, neg, ndigs, ndigs, bits_per_dig, bits_per_dig, digs))
elif type(obj) is float:
print('#if MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_A || MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_B')
print('STATIC const mp_obj_float_t %s = {{&mp_type_float}, %.16g};'
% (obj_name, obj))
print('#endif')
elif type(obj) is complex:
print('STATIC const mp_obj_complex_t %s = {{&mp_type_complex}, %.16g, %.16g};'
% (obj_name, obj.real, obj.imag))
else:
raise FreezeError(self, 'freezing of object %r is not implemented' % (obj,))
# generate constant table, if it has any entries
const_table_len = len(self.qstrs) + len(self.objs) + len(self.raw_codes)
if const_table_len:
print('STATIC const mp_rom_obj_t const_table_data_%s[%u] = {'
% (self.escaped_name, const_table_len))
for qst in self.qstrs:
print(' MP_ROM_QSTR(%s),' % global_qstrs[qst].qstr_id)
for i in range(len(self.objs)):
if type(self.objs[i]) is float:
print('#if MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_A || MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_B')
print(' MP_ROM_PTR(&const_obj_%s_%u),' % (self.escaped_name, i))
print('#elif MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_C')
n = struct.unpack('<I', struct.pack('<f', self.objs[i]))[0]
n = ((n & ~0x3) | 2) + 0x80800000
print(' (mp_rom_obj_t)(0x%08x),' % (n,))
print('#elif MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_D')
n = struct.unpack('<Q', struct.pack('<d', self.objs[i]))[0]
n += 0x8004000000000000
print(' (mp_rom_obj_t)(0x%016x),' % (n,))
print('#endif')
else:
print(' MP_ROM_PTR(&const_obj_%s_%u),' % (self.escaped_name, i))
for rc in self.raw_codes:
print(' MP_ROM_PTR(&raw_code_%s),' % rc.escaped_name)
print('};')
# generate module
if self.simple_name.str != '<module>':
print('STATIC ', end='')
print('const mp_raw_code_t raw_code_%s = {' % self.escaped_name)
print(' .kind = MP_CODE_BYTECODE,')
print(' .scope_flags = 0x%02x,' % self.prelude[2])
print(' .n_pos_args = %u,' % self.prelude[3])
print(' .data.u_byte = {')
print(' .bytecode = bytecode_data_%s,' % self.escaped_name)
if const_table_len:
print(' .const_table = (mp_uint_t*)const_table_data_%s,' % self.escaped_name)
else:
print(' .const_table = NULL,')
print(' #if MICROPY_PERSISTENT_CODE_SAVE')
print(' .bc_len = %u,' % len(self.bytecode))
print(' .n_obj = %u,' % len(self.objs))
print(' .n_raw_code = %u,' % len(self.raw_codes))
print(' #endif')
print(' },')
print('};')
def read_uint(f):
i = 0
while True:
b = bytes_cons(f.read(1))[0]
i = (i << 7) | (b & 0x7f)
if b & 0x80 == 0:
break
return i
global_qstrs = []
qstr_type = namedtuple('qstr', ('str', 'qstr_esc', 'qstr_id'))
def read_qstr(f):
ln = read_uint(f)
data = str_cons(f.read(ln), 'utf8')
qstr_esc = qstrutil.qstr_escape(data)
global_qstrs.append(qstr_type(data, qstr_esc, 'MP_QSTR_' + qstr_esc))
return len(global_qstrs) - 1
def read_obj(f):
obj_type = f.read(1)
if obj_type == b'e':
return Ellipsis
else:
buf = f.read(read_uint(f))
if obj_type == b's':
return str_cons(buf, 'utf8')
elif obj_type == b'b':
return bytes_cons(buf)
elif obj_type == b'i':
return int(str_cons(buf, 'ascii'), 10)
elif obj_type == b'f':
return float(str_cons(buf, 'ascii'))
elif obj_type == b'c':
return complex(str_cons(buf, 'ascii'))
else:
assert 0
def read_qstr_and_pack(f, bytecode, ip):
qst = read_qstr(f)
bytecode[ip] = qst & 0xff
bytecode[ip + 1] = qst >> 8
def read_bytecode_qstrs(file, bytecode, ip):
while ip < len(bytecode):
f, sz = mp_opcode_format(bytecode, ip)
if f == 1:
read_qstr_and_pack(file, bytecode, ip + 1)
ip += sz
def read_raw_code(f):
bc_len = read_uint(f)
bytecode = bytearray(f.read(bc_len))
ip, ip2, prelude = extract_prelude(bytecode)
read_qstr_and_pack(f, bytecode, ip2) # simple_name
read_qstr_and_pack(f, bytecode, ip2 + 2) # source_file
read_bytecode_qstrs(f, bytecode, ip)
n_obj = read_uint(f)
n_raw_code = read_uint(f)
qstrs = [read_qstr(f) for _ in range(prelude[3] + prelude[4])]
objs = [read_obj(f) for _ in range(n_obj)]
raw_codes = [read_raw_code(f) for _ in range(n_raw_code)]
return RawCode(bytecode, qstrs, objs, raw_codes)
def read_mpy(filename):
with open(filename, 'rb') as f:
header = bytes_cons(f.read(4))
if header[0] != ord('M'):
raise Exception('not a valid .mpy file')
if header[1] != config.MPY_VERSION:
raise Exception('incompatible .mpy version')
feature_flags = header[2]
config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE = (feature_flags & 1) != 0
config.MICROPY_PY_BUILTINS_STR_UNICODE = (feature_flags & 2) != 0
config.mp_small_int_bits = header[3]
return read_raw_code(f)
def dump_mpy(raw_codes):
for rc in raw_codes:
rc.dump()
def freeze_mpy(base_qstrs, raw_codes):
# add to qstrs
new = {}
for q in global_qstrs:
# don't add duplicates
if q.qstr_esc in base_qstrs or q.qstr_esc in new:
continue
new[q.qstr_esc] = (len(new), q.qstr_esc, q.str)
new = sorted(new.values(), key=lambda x: x[0])
print('#include "py/mpconfig.h"')
print('#include "py/objint.h"')
print('#include "py/objstr.h"')
print('#include "py/emitglue.h"')
print()
print('#if MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE != %u' % config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE)
print('#error "incompatible MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE"')
print('#endif')
print()
print('#if MICROPY_LONGINT_IMPL != %u' % config.MICROPY_LONGINT_IMPL)
print('#error "incompatible MICROPY_LONGINT_IMPL"')
print('#endif')
print()
if config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_MPZ:
print('#if MPZ_DIG_SIZE != %u' % config.MPZ_DIG_SIZE)
print('#error "incompatible MPZ_DIG_SIZE"')
print('#endif')
print()
print('#if MICROPY_PY_BUILTINS_FLOAT')
print('typedef struct _mp_obj_float_t {')
print(' mp_obj_base_t base;')
print(' mp_float_t value;')
print('} mp_obj_float_t;')
print('#endif')
print()
print('#if MICROPY_PY_BUILTINS_COMPLEX')
print('typedef struct _mp_obj_complex_t {')
print(' mp_obj_base_t base;')
print(' mp_float_t real;')
print(' mp_float_t imag;')
print('} mp_obj_complex_t;')
print('#endif')
print()
print('enum {')
for i in range(len(new)):
if i == 0:
print(' MP_QSTR_%s = MP_QSTRnumber_of,' % new[i][1])
else:
print(' MP_QSTR_%s,' % new[i][1])
print('};')
print()
print('extern const qstr_pool_t mp_qstr_const_pool;');
print('const qstr_pool_t mp_qstr_frozen_const_pool = {')
print(' (qstr_pool_t*)&mp_qstr_const_pool, // previous pool')
print(' MP_QSTRnumber_of, // previous pool size')
print(' %u, // allocated entries' % len(new))
print(' %u, // used entries' % len(new))
print(' {')
for _, _, qstr in new:
print(' %s,'
% qstrutil.make_bytes(config.MICROPY_QSTR_BYTES_IN_LEN, config.MICROPY_QSTR_BYTES_IN_HASH, qstr))
print(' },')
print('};')
for rc in raw_codes:
rc.freeze(rc.source_file.str.replace('/', '_')[:-3] + '_')
print()
print('const char mp_frozen_mpy_names[] = {')
for rc in raw_codes:
module_name = rc.source_file.str
print('"%s\\0"' % module_name)
print('"\\0"};')
print('const mp_raw_code_t *const mp_frozen_mpy_content[] = {')
for rc in raw_codes:
print(' &raw_code_%s,' % rc.escaped_name)
print('};')
def main():
import argparse
cmd_parser = argparse.ArgumentParser(description='A tool to work with MicroPython .mpy files.')
cmd_parser.add_argument('-d', '--dump', action='store_true',
help='dump contents of files')
cmd_parser.add_argument('-f', '--freeze', action='store_true',
help='freeze files')
cmd_parser.add_argument('-q', '--qstr-header',
help='qstr header file to freeze against')
cmd_parser.add_argument('-mlongint-impl', choices=['none', 'longlong', 'mpz'], default='mpz',
help='long-int implementation used by target (default mpz)')
cmd_parser.add_argument('-mmpz-dig-size', metavar='N', type=int, default=16,
help='mpz digit size used by target (default 16)')
cmd_parser.add_argument('files', nargs='+',
help='input .mpy files')
args = cmd_parser.parse_args()
# set config values relevant to target machine
config.MICROPY_LONGINT_IMPL = {
'none':config.MICROPY_LONGINT_IMPL_NONE,
'longlong':config.MICROPY_LONGINT_IMPL_LONGLONG,
'mpz':config.MICROPY_LONGINT_IMPL_MPZ,
}[args.mlongint_impl]
config.MPZ_DIG_SIZE = args.mmpz_dig_size
# set config values for qstrs, and get the existing base set of qstrs
if args.qstr_header:
qcfgs, base_qstrs = qstrutil.parse_input_headers([args.qstr_header])
config.MICROPY_QSTR_BYTES_IN_LEN = int(qcfgs['BYTES_IN_LEN'])
config.MICROPY_QSTR_BYTES_IN_HASH = int(qcfgs['BYTES_IN_HASH'])
else:
config.MICROPY_QSTR_BYTES_IN_LEN = 1
config.MICROPY_QSTR_BYTES_IN_HASH = 1
base_qstrs = {}
raw_codes = [read_mpy(file) for file in args.files]
if args.dump:
dump_mpy(raw_codes)
elif args.freeze:
try:
freeze_mpy(base_qstrs, raw_codes)
except FreezeError as er:
print(er, file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
main()
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