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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cli(ctx, all, top, nostyle, nowarn, warn, project_dir):
 """Lint the verilog code."""


    exit_code = SCons(project_dir).lint({
        'all': all,
        'top': top,
        'nostyle': nostyle,
        'nowarn': nowarn,
        'warn': warn
    })
    ctx.exit(exit_code)