文档的特定位置替换字串

def fun_getBinCountToProject():
    with open("../aps/application/radisson/formal/sys_common_guiobj/app_guiobj_setup.c", "r") as project_op:
        temStr = '#define CONFIG_FLASH_BIN_COUNT ' + str(len(g_listBin));
        content = project_op.read();

        pos = content.find('#define CONFIG_FLASH_BIN_COUNT');
        if pos != -1:
            pos_end = content[pos:].find('\n');
            content = content[:pos] + temStr + content[pos + pos_end:];
            with open("../aps/application/radisson/formal/sys_common_guiobj/app_guiobj_setup.c","w") as project_op:
                project_op.write(content);