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#! /usr/bin/env python
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#################################################################
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### This program is part of PyINT v2.2 ###
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### Copy Right (c): 2017-2019, Chen Wei ###
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### Author: chenwei ###
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### Contact : ymcmrs@gmail.com ###
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#################################################################
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import numpy as np
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import os
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import sys
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import subprocess
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import getopt
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import time
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import glob
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import argparse
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import re
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import shutil
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import tarfile
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from pyint import _orbit_bridge as orbit_bridge
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from pyint import _utils as ut
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def get_LT1_date(raw_file):
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file0 = os.path.basename(raw_file)
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date = file0[41:48]
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return date
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def get_satellite(raw_file):
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if 'LT1A_MONO_' in raw_file:
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s0 = 'A'
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else:
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s0 = 'B'
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return s0
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def discover_lt1_inputs(down_dir, date):
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candidates = []
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for pattern in (
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down_dir + '/LT1*' + date + '*.tar.gz',
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down_dir + '/LT1*' + date + '*.tiff',
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):
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candidates.extend(glob.glob(pattern))
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return sorted(set(candidates))
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def write_input_list(list_path, paths):
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with open(list_path, 'w') as f:
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for path in paths:
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f.write(path + '\n')
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def _run_checked(command, cwd=None):
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result = subprocess.run(
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command,
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cwd=cwd,
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text=True,
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capture_output=True,
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check=False,
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)
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if result.returncode != 0:
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detail = (result.stderr or result.stdout or "").strip()
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raise RuntimeError(
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'Command failed (%s): %s%s' % (
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result.returncode,
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' '.join(command),
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('\n' + detail) if detail else '',
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)
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)
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return result
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def _cleanup_paths(paths):
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for path in paths:
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if not path:
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continue
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try:
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if os.path.isdir(path):
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shutil.rmtree(path)
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elif os.path.isfile(path):
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os.remove(path)
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except OSError:
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continue
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def _resolve_lt1_input_scene(raw_path, work_dir):
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cleanup_paths = []
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raw_lower = raw_path.lower()
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if raw_lower.endswith('.tiff'):
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input_xml = re.sub(r'\.tiff$', '.meta.xml', raw_path, flags=re.IGNORECASE)
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if not os.path.isfile(input_xml):
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raise FileNotFoundError('LT-1 meta xml does not exist: ' + input_xml)
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return raw_path, input_xml, cleanup_paths
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if raw_lower.endswith('.tar.gz'):
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temp_dir = os.path.join(work_dir, 'tmp_data_dir')
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if os.path.isdir(temp_dir):
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shutil.rmtree(temp_dir)
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os.makedirs(temp_dir, exist_ok=True)
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cleanup_paths.append(temp_dir)
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with tarfile.open(raw_path, 'r:gz') as archive:
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member_names = archive.getnames()
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tiff_members = [name for name in member_names if name.lower().endswith('.tiff')]
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xml_members = [name for name in member_names if name.lower().endswith('meta.xml')]
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if not tiff_members or not xml_members:
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raise RuntimeError('LT-1 archive is missing .tiff or meta.xml: ' + raw_path)
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tiff_member = tiff_members[0]
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xml_member = xml_members[0]
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archive.extract(tiff_member, path=temp_dir)
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archive.extract(xml_member, path=temp_dir)
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return os.path.join(temp_dir, tiff_member), os.path.join(temp_dir, xml_member), cleanup_paths
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raise RuntimeError('Unsupported LT-1 input, only .tiff or .tar.gz are supported: ' + raw_path)
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def cmdLineParse():
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parser = argparse.ArgumentParser(description='Generate SLC from LT1 raw data with orbit correction using GAMMA.',\
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formatter_class=argparse.RawTextHelpFormatter,\
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epilog=INTRODUCTION+'\n'+EXAMPLE)
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parser.add_argument('projectName', help='project name. e.g., ChangningT55S1A')
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parser.add_argument('date',help='date to be processed. e.g., 20180101')
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inps = parser.parse_args()
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return inps
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INTRODUCTION = '''
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-------------------------------------------------------------------
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Generate SLC from Sentinel-1 raw data using S1_import_SLC_from_zipfiles with orbit correction.
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[Precise orbit data will be downloaded automatically]
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'''
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EXAMPLE = """Usage:
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down2slc_sen.py projectName date
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down2slc_sen.py ChangningT55S1A 20180517
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-------------------------------------------------------------------
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"""
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def main(argv):
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inps = cmdLineParse()
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projectName = inps.projectName
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date = inps.date
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scratchDir = os.getenv('SCRATCHDIR')
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projectDir = scratchDir + '/' + projectName
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templateDir = os.getenv('TEMPLATEDIR')
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templateFile = templateDir + "/" + projectName + ".template"
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templateDict=ut.update_template(templateFile)
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slc_dir = projectDir + '/SLC'
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down_dir = projectDir + '/DOWNLOAD'
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if not os.path.isdir(slc_dir):
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os.mkdir(slc_dir)
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work_dir = slc_dir + '/' + date
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if not os.path.isdir(work_dir):
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os.mkdir(work_dir)
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os.chdir(work_dir)
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t_date = 't_' + date
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input_files = discover_lt1_inputs(down_dir, date)
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write_input_list(t_date, input_files)
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raw_files = ut.read_txt2list(t_date)
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if len(raw_files) == 0:
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raise RuntimeError('No LT-1 inputs found for date: ' + date)
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satellite = get_satellite(str(raw_files[0]))
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zipfile_ref=str(raw_files[0])
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outfile_name=zipfile_ref.split('/')[-1].split('.')[0]
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outfile_name=zipfile_ref.split('/')[-1]
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print(outfile_name)
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cleanup_paths = []
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try:
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input_tiff, input_xml, cleanup_paths = _resolve_lt1_input_scene(zipfile_ref, work_dir)
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slc_path = work_dir + '/' + date + '.slc'
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slc_par_path = work_dir + '/' + date + '.slc.par'
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_run_checked(
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['par_LT1_SLC', input_tiff, input_xml, slc_par_path, slc_path],
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cwd=work_dir,
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)
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if not os.path.isfile(slc_path) or not os.path.isfile(slc_par_path):
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raise RuntimeError('LT-1 import produced no SLC outputs for date: ' + date)
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bridge_result = orbit_bridge.apply_precise_orbit(
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date,
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[slc_par_path],
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work_dir=work_dir,
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operation_tag='lt1_import',
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)
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if bridge_result.get('stdout'):
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print(bridge_result['stdout'])
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if bridge_result.get('stderr'):
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print(bridge_result['stderr'])
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finally:
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_cleanup_paths(cleanup_paths)
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SLC_Tab = work_dir + '/' + date+'_SLC_Tab'
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SLC_list = sorted(glob.glob(work_dir + '/*.slc'))
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SLC_par_list = sorted(glob.glob(work_dir + '/*.slc.par'))
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if len(SLC_list) == 0 or len(SLC_par_list) == 0:
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raise RuntimeError('No LT-1 SLC outputs were generated for date: ' + date)
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if len(SLC_list) != len(SLC_par_list):
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raise RuntimeError('LT-1 SLC and SLC parameter counts do not match for date: ' + date)
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if os.path.isfile(SLC_Tab):
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os.remove(SLC_Tab)
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for kk in range(len(SLC_list)):
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call_str = 'echo ' + SLC_list[kk] + ' ' + SLC_par_list[kk] + ' >> ' + SLC_Tab
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if os.system(call_str) != 0:
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raise RuntimeError('Failed to write SLC tab for date: ' + date)
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with open(work_dir + '/down2slc.dat', 'w') as f:
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f.write('ok\n')
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print("Down to SLC for %s is done! " % date)
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sys.exit(0)
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if __name__ == '__main__':
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main(sys.argv[:])
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