Example using the lldb Python bindings to create breakpoints, run a program, and step through programatically

lldbtest.py

import lldb
import os
import sys

symbol_types = {}
for x in dir(lldb):
    if x.startswith('eSymbolType'):
        symbol_types[getattr(lldb, x)] = x[len('eSymbolType'):]

dbg = lldb.SBDebugger.Create()
dbg.SetAsync(False)

target = dbg.CreateTarget(sys.argv[1])

for m in target.module_iter():
    print(m, [x.name for x in m.sections])
    for symbol in m:
        if symbol.type not in (lldb.eSymbolTypeCode, lldb.eSymbolTypeTrampoline) or symbol.name is None or symbol.name.startswith('.'):
            print('Skipping {:<40} {:<8}'.format(symbol.name or '', symbol_types[symbol.type]))
            continue
        print('{:<12} {:<40} {:<8}'.format(
            symbol.mangled or '',
            symbol.name or '',
            symbol_types[symbol.type],
            ))

        target.BreakpointCreateByName(symbol.name)

# no args, no env vars
process = target.LaunchSimple(None, None, os.getcwd())
print(process)

thread = process.GetThreadAtIndex(0)
while process.GetState() != lldb.eStateExited:
    frame = thread.GetFrameAtIndex(0)
    print(frame.GetSymbol().name)
    function = frame.GetFunction()
    if function:
        typ = function.type
        ret_t = typ.GetFunctionReturnType()
        args_t = typ.GetFunctionArgumentTypes()
        print(function.name, ret_t, [x.name for x in args_t])
        arg_names = [function.GetArgumentName(i) for i in range(len(args_t))]
        arg_values = [frame.FindVariable(n).value for n in arg_names]
        print('  ', arg_values)
    else:
        print(frame.GetSymbol().name)
    process.Continue()

print('exited')

for bp in target.breakpoint_iter():
    print(bp.id, bp.locations[0].GetAddress().GetSymbol().name, bp.GetHitCount())