From 19136c0851a77ad8a1589fb897b42e925a4631bc Mon Sep 17 00:00:00 2001 From: Jordan Carlin Date: Sun, 8 Dec 2024 04:50:22 -0800 Subject: [PATCH 1/3] Begin refactoring run_vcs script --- sim/questa/wally.do | 2 +- sim/vcs/run_vcs | 42 +++++++++++++++++++++--------------------- 2 files changed, 22 insertions(+), 22 deletions(-) diff --git a/sim/questa/wally.do b/sim/questa/wally.do index be47abb4f..3c7046a37 100644 --- a/sim/questa/wally.do +++ b/sim/questa/wally.do @@ -3,7 +3,7 @@ # # Modification by Oklahoma State University & Harvey Mudd College # Use with Testbench -# James Stine, 2008; David Harris 2021 +# James Stine, 2008; David Harris 2021; Jordan Carlin 2024 # Go Cowboys!!!!!! # # Takes 1:10 to run RV64IC tests using gui diff --git a/sim/vcs/run_vcs b/sim/vcs/run_vcs index e062205ae..7aa0a44e6 100755 --- a/sim/vcs/run_vcs +++ b/sim/vcs/run_vcs @@ -2,6 +2,7 @@ # run_vcs # David_Harris@hmc.edu 2 July 2024 +# Modified Jordan Carlin jcarlin@hmc.edu Dec 9 2024 # Run VCS on a given file, passing appropriate flags # SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1 @@ -33,7 +34,7 @@ parser.add_argument("--lockstep", "-l", help="Run ImperasDV lock, step, and comp # GUI not yet implemented #parser.add_argument("--gui", "-g", help="Simulate with GUI", action="store_true") args = parser.parse_args() -print("run_vcs Config=" + args.config + " tests=" + args.testsuite + " lockstep=" + str(args.lockstep) + " args='" + args.args + "' params='" + args.params + "'" + " define='" + args.define + "'") +print(f"run_vcs Config={args.config} tests={args.testsuite} lockstep={args.lockstep} args='{args.args}' params='{args.params}' define='{args.define}'") cfgdir = "$WALLY/config" srcdir = "$WALLY/src" @@ -42,20 +43,20 @@ wkdir = "$WALLY/sim/vcs/wkdir/" + args.config + "_" + args.testsuite covdir = "$WALLY/sim/vcs/cov/" + args.config + "_" + args.testsuite logdir = "$WALLY/sim/vcs/logs" -os.system("mkdir -p " + wkdir) -os.system("mkdir -p " + covdir) -os.system("mkdir -p " + logdir) +os.makedirs(wkdir, exist_ok=True) +os.makedirs(covdir, exist_ok=True) +os.makedirs(logdir, exist_ok=True) # Find RTL source files -rtlsrc_cmd = "find " + srcdir + ' -name "*.sv" ! -path "' + srcdir + '/generic/mem/rom1p1r_128x64.sv" ! -path "' + srcdir + '/generic/mem/ram2p1r1wbe_128x64.sv" ! -path "' + srcdir + '/generic/mem/rom1p1r_128x32.sv" ! -path "' + srcdir + '/generic/mem/ram2p1r1wbe_2048x64.sv"' +rtlsrc_cmd = f'find {srcdir} -name "*.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x64.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_128x64.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x32.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_2048x64.sv"' rtlsrc_files = runfindcmd(rtlsrc_cmd) -tbcommon_cmd = 'find ' + tbdir+'/common -name "*.sv" ! -path "' + tbdir+'/common/wallyTracer.sv"' +tbcommon_cmd = f'find {tbdir}/common -name "*.sv" ! -path "{tbdir}/common/wallyTracer.sv"' tbcommon_files = runfindcmd(tbcommon_cmd) -tb_file = tbdir + "/" + args.tb + ".sv" -RTL_FILES = tb_file + ' ' + str(rtlsrc_files) + ' ' + str(tbcommon_files) +tb_file = f'{tbdir}/{args.tb}.sv' +RTL_FILES = f"{tb_file} {rtlsrc_files} {tbcommon_files}" # Include directories -INCLUDE_PATH="+incdir+" + cfgdir + "/" + args.config + " +incdir+" + cfgdir + "/deriv/" + args.config + " +incdir+" + cfgdir + "/shared +incdir+$WALLY/tests +incdir+" + tbdir + " +incdir+" + srcdir +INCLUDE_PATH=f"+incdir+{cfgdir}/{args.config} +incdir+{cfgdir}/deriv/{args.config} +incdir+{cfgdir}/shared +incdir+$WALLY/tests +incdir+{tbdir} +incdir+{srcdir}" # lockstep mode if (args.lockstep): @@ -67,7 +68,7 @@ else: # coverage mode if (args.ccov): - COV_OPTIONS = "-cm line+cond+branch+fsm+tgl -cm_log " + wkdir + "/coverage.log -cm_dir " + wkdir + "/coverage" + COV_OPTIONS = f"-cm line+cond+branch+fsm+tgl -cm_log {wkdir}/coverage.log -cm_dir {wkdir}/coverage" else: COV_OPTIONS = "" @@ -75,25 +76,24 @@ else: f = open(os.path.expandvars(wkdir) + "/param_overrides.txt", "w") for param in args.params.split(): [param, value] = param.split("=") - if "\\'" in value: # for bit values - value = value.replace("\\'", "'") + if fr"\'" in value: # for bit values + value = value.replace(rf"\'", "'") else: # for strings - value = "\"" + value + "\"" - # print("param=" + param + " value=" + value) - f.write("assign " + value + " " + args.tb + "/" + param + "\n") + value = f'"{value}"' + f.write(f"assign {value} {args.tb}/{param}\n") f.close() -PARAM_OVERRIDES=" -parameters " + wkdir + "/param_overrides.txt " +PARAM_OVERRIDES=f" -parameters {wkdir}/param_overrides.txt " # Simulation commands OUTPUT="sim_out" -VCS_CMD="vcs +lint=all,noGCWM,noUI,noSVA-UA,noIDTS,noNS,noULCO,noCAWM-L,noWMIA-L,noSV-PIU,noSTASKW_CO,noSTASKW_CO1,noSTASKW_RMCOF -suppress +warn -sverilog +vc -Mupdate -line -full64 -lca -ntb_opts sensitive_dyn " + "-top " + args.tb + " " + args.define + " " + PARAM_OVERRIDES + INCLUDE_PATH # Disabled Debug flags; add them back for a GUI mode -debug_access+all+reverse -kdb +vcs+vcdpluson -VCS = VCS_CMD + " -Mdir=" + wkdir + " " + srcdir + "/cvw.sv " + LOCKSTEP_OPTIONS + " " + COV_OPTIONS + " " + RTL_FILES + " -o " + wkdir + "/" + OUTPUT + " -work " + wkdir + " -Mlib=" + wkdir + " -l " + logdir + "/" + args.config + "_" + args.testsuite + ".log" -SIMV_CMD= wkdir + "/" + OUTPUT + " +TEST=" + args.testsuite + " " + args.args + " -no_save " + LOCKSTEP_SIMV +VCS_CMD=f"vcs +lint=all,noGCWM,noUI,noSVA-UA,noIDTS,noNS,noULCO,noCAWM-L,noWMIA-L,noSV-PIU,noSTASKW_CO,noSTASKW_CO1,noSTASKW_RMCOF -suppress +warn -sverilog +vc -Mupdate -line -full64 -lca -ntb_opts sensitive_dyn -top {args.tb} {args.define} {PARAM_OVERRIDES} {INCLUDE_PATH}" # Disabled Debug flags; add them back for a GUI mode -debug_access+all+reverse -kdb +vcs+vcdpluson +VCS = f'{VCS_CMD} -Mdir={wkdir} {srcdir}/cvw.sv {LOCKSTEP_OPTIONS} {COV_OPTIONS} {RTL_FILES} -o {wkdir}/{OUTPUT} -work {wkdir} -Mlib={wkdir} -l {logdir}/{args.config}_{args.testsuite}.log' +SIMV_CMD= f'wkdir/{OUTPUT} +TEST={args.testsuite} {args.args} -no_save {LOCKSTEP_SIMV}' # Run simulation -print("Executing: " + str(VCS) ) +print(f"Executing: {VCS}") subprocess.run(VCS, shell=True) subprocess.run(SIMV_CMD, shell=True) if (args.ccov): - COV_RUN = "urg -dir " + wkdir + "/coverage.vdb -format text -report IndividualCovReport/" + args.config + "_" + args.testsuite + COV_RUN = f"urg -dir {wkdir}/coverage.vdb -format text -report IndividualCovReport/{args.config}_{args.testsuite}" subprocess.run(COV_RUN, shell=True) From 12966c33b5b9437178832021751a3b7d5fc65534 Mon Sep 17 00:00:00 2001 From: Jordan Carlin Date: Sun, 8 Dec 2024 18:18:34 -0800 Subject: [PATCH 2/3] initial attempt at totally refactored run_vcs script --- sim/vcs/run_vcs | 165 +++++++++++++++++++++++++++--------------------- 1 file changed, 93 insertions(+), 72 deletions(-) diff --git a/sim/vcs/run_vcs b/sim/vcs/run_vcs index 7aa0a44e6..a9041e650 100755 --- a/sim/vcs/run_vcs +++ b/sim/vcs/run_vcs @@ -6,94 +6,115 @@ # Run VCS on a given file, passing appropriate flags # SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1 - import argparse import os import subprocess +import sys + +# Global variables +WALLY = os.environ.get('WALLY') +simdir = f"{WALLY}/sim/vcs" +cfgdir = f"{WALLY}/config" +srcdir = f"{WALLY}/src" +tbdir = f"{WALLY}/testbench" +logdir = f"{simdir}/logs" # run a Linux command and return the result as a string in a form that VCS can use -def runfindcmd(cmd): -# print("Executing: " + str(cmd) ) - res = subprocess.check_output(cmd, shell=True) +def runFindCommand(cmd): + res = subprocess.check_output(cmd, shell=True, ) res = str(res) res = res.replace("\\n", " ") # replace newline with space res = res.replace("\'", "") # strip off quotation marks res = res[1:] # strip off leading b from byte string return res -parser = argparse.ArgumentParser() -parser.add_argument("config", help="Configuration file") -parser.add_argument("testsuite", help="Test suite (or none, when running a single ELF file) ") -parser.add_argument("--tb", "-t", help="Testbench", choices=["testbench", "testbench_fp"], default="testbench") -parser.add_argument("--ccov", "-c", help="Code Coverage", action="store_true") -parser.add_argument("--fcov", "-f", help="Functional Coverage", action="store_true") -parser.add_argument("--args", "-a", help="Optional arguments passed to simulator via $value$plusargs", default="") -parser.add_argument("--params", "-p", help="Optional top-level parameter overrides of the form param=value", default="") -parser.add_argument("--define", "-d", help="Optional define macros passed to simulator", default="") -parser.add_argument("--lockstep", "-l", help="Run ImperasDV lock, step, and compare.", action="store_true") -# GUI not yet implemented -#parser.add_argument("--gui", "-g", help="Simulate with GUI", action="store_true") -args = parser.parse_args() -print(f"run_vcs Config={args.config} tests={args.testsuite} lockstep={args.lockstep} args='{args.args}' params='{args.params}' define='{args.define}'") +def parseArgs(): + parser = argparse.ArgumentParser() + parser.add_argument("config", help="Configuration file") + parser.add_argument("testsuite", help="Test suite (or none, when running a single ELF file) ") + parser.add_argument("--tb", "-t", help="Testbench", choices=["testbench", "testbench_fp"], default="testbench") + parser.add_argument("--ccov", "-c", help="Code Coverage", action="store_true") + parser.add_argument("--fcov", "-f", help="Functional Coverage", action="store_true") + parser.add_argument("--args", "-a", help="Optional arguments passed to simulator via $value$plusargs", default="") + parser.add_argument("--params", "-p", help="Optional top-level parameter overrides of the form param=value", default="") + parser.add_argument("--define", "-d", help="Optional define macros passed to simulator", default="") + parser.add_argument("--lockstep", "-l", help="Run ImperasDV lock, step, and compare.", action="store_true") + #parser.add_argument("--gui", "-g", help="Simulate with GUI", action="store_true") # GUI not yet implemented + return parser.parse_args() -cfgdir = "$WALLY/config" -srcdir = "$WALLY/src" -tbdir = "$WALLY/testbench" -wkdir = "$WALLY/sim/vcs/wkdir/" + args.config + "_" + args.testsuite -covdir = "$WALLY/sim/vcs/cov/" + args.config + "_" + args.testsuite -logdir = "$WALLY/sim/vcs/logs" +def createDirs(args): + wkdir = f"{simdir}/wkdir/{args.config}_{args.testsuite}" + covdir = f"{simdir}/cov/{args.config}_{args.testsuite}" + os.makedirs(wkdir, exist_ok=True) + os.makedirs(covdir, exist_ok=True) + os.makedirs(logdir, exist_ok=True) + return wkdir, covdir -os.makedirs(wkdir, exist_ok=True) -os.makedirs(covdir, exist_ok=True) -os.makedirs(logdir, exist_ok=True) +def generateFileList(): + rtlsrc_cmd = f'find {srcdir} -name "*.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x64.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_128x64.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x32.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_2048x64.sv"' + rtlsrc_files = runFindCommand(rtlsrc_cmd) + tbcommon_cmd = f'find {tbdir}/common -name "*.sv" ! -path "{tbdir}/common/wallyTracer.sv"' + tbcommon_files = runFindCommand(tbcommon_cmd) + tb_file = f'{tbdir}/{args.tb}.sv' + return f"{tb_file} {rtlsrc_files} {tbcommon_files}" -# Find RTL source files -rtlsrc_cmd = f'find {srcdir} -name "*.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x64.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_128x64.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x32.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_2048x64.sv"' -rtlsrc_files = runfindcmd(rtlsrc_cmd) -tbcommon_cmd = f'find {tbdir}/common -name "*.sv" ! -path "{tbdir}/common/wallyTracer.sv"' -tbcommon_files = runfindcmd(tbcommon_cmd) -tb_file = f'{tbdir}/{args.tb}.sv' -RTL_FILES = f"{tb_file} {rtlsrc_files} {tbcommon_files}" +def processArgs(wkdir, args): + compileOptions = [] + simvOptions = [] + if args.lockstep: + compileOptions.extend(["+incdir+$IMPERAS_HOME/ImpPublic/include/host", + "+incdir+$IMPERAS_HOME/ImpProprietary/include/host", + "$IMPERAS_HOME/ImpPublic/source/host/rvvi/*.sv", + "$IMPERAS_HOME/ImpProprietary/source/host/idv/*.sv", + f"{tbdir}/common/wallyTracer.sv"]) + simvOptions.append("-sv_lib $IMPERAS_HOME/lib/Linux64/ImperasLib/imperas.com/verification/riscv/1.0/model") + if args.ccov: + compileOptions.extend(["-cm line+cond+branch+fsm+tgl", f"-cm_log {wkdir}/coverage.log", f"-cm_dir {wkdir}/coverage"]) + if args.params: + compileOptions.append(setupParamOverrides(wkdir, args)) + if args.define: + compileOptions.append(args.define) + # if args.gui: + # compileOptions.append("-debug_access+all+reverse -kdb +vcs+vcdpluson") + compileOptions = " ".join(compileOptions) + simvOptions = " ".join(simvOptions) + return compileOptions, simvOptions -# Include directories -INCLUDE_PATH=f"+incdir+{cfgdir}/{args.config} +incdir+{cfgdir}/deriv/{args.config} +incdir+{cfgdir}/shared +incdir+$WALLY/tests +incdir+{tbdir} +incdir+{srcdir}" +def setupParamOverrides(wkdir, args): + paramOverrideFile = os.path.join(wkdir, "param_overrides.txt") + with open(paramOverrideFile, "w") as f: + for param in args.params.split(): + [param, value] = param.split("=") + if fr"\'" in value: # for bit values + value = value.replace(fr"\'", "'") + else: # for strings + value = f'"{value}"' + f.write(f"assign {value} {args.tb}/{param}\n") + return f" -parameters {wkdir}/param_overrides.txt " -# lockstep mode -if (args.lockstep): - LOCKSTEP_OPTIONS = " +incdir+$IMPERAS_HOME/ImpPublic/include/host +incdir+$IMPERAS_HOME/ImpProprietary/include/host $IMPERAS_HOME/ImpPublic/source/host/rvvi/*.sv $IMPERAS_HOME/ImpProprietary/source/host/idv/*.sv " + tbdir + "/common/wallyTracer.sv" - LOCKSTEP_SIMV = "-sv_lib $IMPERAS_HOME/lib/Linux64/ImperasLib/imperas.com/verification/riscv/1.0/model" -else: - LOCKSTEP_OPTIONS = "" - LOCKSTEP_SIMV = "" +def setupCommands(wkdir, rtlFiles, compileOptions, simvOptions, args): + includePath=f"+incdir+{cfgdir}/{args.config} +incdir+{cfgdir}/deriv/{args.config} +incdir+{cfgdir}/shared +incdir+$WALLY/tests +incdir+{tbdir} +incdir+{srcdir}" + vcsStandardFlags = "+lint=all,noGCWM,noUI,noSVA-UA,noIDTS,noNS,noULCO,noCAWM-L,noWMIA-L,noSV-PIU,noSTASKW_CO,noSTASKW_CO1,noSTASKW_RMCOF -suppress +warn -sverilog +vc -Mupdate -line -full64 -lca -ntb_opts sensitive_dyn" + vcsCMD = f"vcs {vcsStandardFlags} -top {args.tb} {compileOptions} -Mdir={wkdir} {includePath} {srcdir}/cvw.sv {rtlFiles} -o {wkdir}/sim_out -work {wkdir} -Mlib={wkdir} -l {logdir}/{args.config}_{args.testsuite}.log" + simvCMD = f"{wkdir}/sim_out +TEST={args.testsuite} {args.args} -no_save {simvOptions}" + return vcsCMD, simvCMD -# coverage mode -if (args.ccov): - COV_OPTIONS = f"-cm line+cond+branch+fsm+tgl -cm_log {wkdir}/coverage.log -cm_dir {wkdir}/coverage" -else: - COV_OPTIONS = "" +def runVCS(wkdir, vcsCMD, simvCMD): + print(f"Executing: {vcsCMD}") + subprocess.run(vcsCMD, shell=True) + subprocess.run(simvCMD, shell=True) + if (args.ccov): + COV_RUN = f"urg -dir {wkdir}/coverage.vdb -format text -report IndividualCovReport/{args.config}_{args.testsuite}" + subprocess.run(COV_RUN, shell=True) -# Write parameter overrides to a file -f = open(os.path.expandvars(wkdir) + "/param_overrides.txt", "w") -for param in args.params.split(): - [param, value] = param.split("=") - if fr"\'" in value: # for bit values - value = value.replace(rf"\'", "'") - else: # for strings - value = f'"{value}"' - f.write(f"assign {value} {args.tb}/{param}\n") -f.close() -PARAM_OVERRIDES=f" -parameters {wkdir}/param_overrides.txt " +def main(args): + print(f"run_vcs Config={args.config} tests={args.testsuite} lockstep={args.lockstep} args='{args.args}' params='{args.params}' define='{args.define}'") + wkdir, covdir = createDirs(args) + rtlFiles = generateFileList() + compileOptions, simvOptions = processArgs(wkdir, args) + vcsCMD, simvCMD = setupCommands(wkdir, rtlFiles, compileOptions, simvOptions) + runVCS(wkdir, vcsCMD, simvCMD) -# Simulation commands -OUTPUT="sim_out" -VCS_CMD=f"vcs +lint=all,noGCWM,noUI,noSVA-UA,noIDTS,noNS,noULCO,noCAWM-L,noWMIA-L,noSV-PIU,noSTASKW_CO,noSTASKW_CO1,noSTASKW_RMCOF -suppress +warn -sverilog +vc -Mupdate -line -full64 -lca -ntb_opts sensitive_dyn -top {args.tb} {args.define} {PARAM_OVERRIDES} {INCLUDE_PATH}" # Disabled Debug flags; add them back for a GUI mode -debug_access+all+reverse -kdb +vcs+vcdpluson -VCS = f'{VCS_CMD} -Mdir={wkdir} {srcdir}/cvw.sv {LOCKSTEP_OPTIONS} {COV_OPTIONS} {RTL_FILES} -o {wkdir}/{OUTPUT} -work {wkdir} -Mlib={wkdir} -l {logdir}/{args.config}_{args.testsuite}.log' -SIMV_CMD= f'wkdir/{OUTPUT} +TEST={args.testsuite} {args.args} -no_save {LOCKSTEP_SIMV}' - -# Run simulation -print(f"Executing: {VCS}") -subprocess.run(VCS, shell=True) -subprocess.run(SIMV_CMD, shell=True) -if (args.ccov): - COV_RUN = f"urg -dir {wkdir}/coverage.vdb -format text -report IndividualCovReport/{args.config}_{args.testsuite}" - subprocess.run(COV_RUN, shell=True) +if __name__ == "__main__": + args = parseArgs() + sys.exit(main(args)) From a9aefc01054c4fcc48f1b709e090b8db98b969fc Mon Sep 17 00:00:00 2001 From: Jordan Carlin Date: Sun, 8 Dec 2024 20:50:08 -0800 Subject: [PATCH 3/3] Small VCS fixes after refactor --- sim/vcs/run_vcs | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/sim/vcs/run_vcs b/sim/vcs/run_vcs index a9041e650..7437d2725 100755 --- a/sim/vcs/run_vcs +++ b/sim/vcs/run_vcs @@ -53,7 +53,7 @@ def createDirs(args): def generateFileList(): rtlsrc_cmd = f'find {srcdir} -name "*.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x64.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_128x64.sv" ! -path "{srcdir}/generic/mem/rom1p1r_128x32.sv" ! -path "{srcdir}/generic/mem/ram2p1r1wbe_2048x64.sv"' rtlsrc_files = runFindCommand(rtlsrc_cmd) - tbcommon_cmd = f'find {tbdir}/common -name "*.sv" ! -path "{tbdir}/common/wallyTracer.sv"' + tbcommon_cmd = f'find {tbdir}/common -name "*.sv"' tbcommon_files = runFindCommand(tbcommon_cmd) tb_file = f'{tbdir}/{args.tb}.sv' return f"{tb_file} {rtlsrc_files} {tbcommon_files}" @@ -65,8 +65,7 @@ def processArgs(wkdir, args): compileOptions.extend(["+incdir+$IMPERAS_HOME/ImpPublic/include/host", "+incdir+$IMPERAS_HOME/ImpProprietary/include/host", "$IMPERAS_HOME/ImpPublic/source/host/rvvi/*.sv", - "$IMPERAS_HOME/ImpProprietary/source/host/idv/*.sv", - f"{tbdir}/common/wallyTracer.sv"]) + "$IMPERAS_HOME/ImpProprietary/source/host/idv/*.sv"]) simvOptions.append("-sv_lib $IMPERAS_HOME/lib/Linux64/ImperasLib/imperas.com/verification/riscv/1.0/model") if args.ccov: compileOptions.extend(["-cm line+cond+branch+fsm+tgl", f"-cm_log {wkdir}/coverage.log", f"-cm_dir {wkdir}/coverage"]) @@ -112,7 +111,7 @@ def main(args): wkdir, covdir = createDirs(args) rtlFiles = generateFileList() compileOptions, simvOptions = processArgs(wkdir, args) - vcsCMD, simvCMD = setupCommands(wkdir, rtlFiles, compileOptions, simvOptions) + vcsCMD, simvCMD = setupCommands(wkdir, rtlFiles, compileOptions, simvOptions, args) runVCS(wkdir, vcsCMD, simvCMD) if __name__ == "__main__":