How to use bypy - 10 common examples

return const.ESkipped

			if self.__resumedownload and \
				self.__compare_size(self.__current_file_size, self.__remote_json) == 2:
				if self.__resumedl_revertcount < 0:
					if self.__current_file_size:
						offset = self.__current_file_size
				else:
					# revert back at least self.__resumedl_revertcount download chunk(s), default: one
					pieces = self.__current_file_size // self.__dl_chunk_size
					if pieces > self.__resumedl_revertcount:
						offset = (pieces - self.__resumedl_revertcount) * self.__dl_chunk_size
		elif os.path.isdir(localfile):
			if not self.shalloverwrite("Same-name directory '{}' exists, "
				"do you want to remove it? [y/N]".format(localfile)):
				pinfo("Same-name directory '{}' exists, skip downloading".format(localfile))
				#return const.ENoError
				return const.ESkipped

			self.pv("Directory with the same name '{}' exists, removing ...".format(localfile))
			result = removedir(localfile, self.verbose)
			if result == const.ENoError:
				self.pv("Removed")
			else:
				perr("Error removing the directory '{}'".format(localfile))
				return result

		ldir, file = os.path.split(localfile)
		if ldir and not os.path.exists(ldir):
			result = makedir(ldir, verbose = self.verbose)
			if result != const.ENoError:
				perr("Fail to make directory '{}'".format(ldir))

if self.__resumedownload and \
				self.__compare_size(self.__current_file_size, self.__remote_json) == 2:
				if self.__resumedl_revertcount < 0:
					if self.__current_file_size:
						offset = self.__current_file_size
				else:
					# revert back at least self.__resumedl_revertcount download chunk(s), default: one
					pieces = self.__current_file_size // self.__dl_chunk_size
					if pieces > self.__resumedl_revertcount:
						offset = (pieces - self.__resumedl_revertcount) * self.__dl_chunk_size
		elif os.path.isdir(localfile):
			if not self.shalloverwrite("Same-name directory '{}' exists, "
				"do you want to remove it? [y/N]".format(localfile)):
				pinfo("Same-name directory '{}' exists, skip downloading".format(localfile))
				#return const.ENoError
				return const.ESkipped

			self.pv("Directory with the same name '{}' exists, removing ...".format(localfile))
			result = removedir(localfile, self.verbose)
			if result == const.ENoError:
				self.pv("Removed")
			else:
				perr("Error removing the directory '{}'".format(localfile))
				return result

		ldir, file = os.path.split(localfile)
		if ldir and not os.path.exists(ldir):
			result = makedir(ldir, verbose = self.verbose)
			if result != const.ENoError:
				perr("Fail to make directory '{}'".format(ldir))
				return result

return result

		offset = 0
		self.pd("Checking if we already have the copy locally")
		if os.path.isfile(localfile):
			self.pd("Same-name local file '{}' exists, checking if contents match".format(localfile))
			self.__current_file_size = getfilesize(self.__current_file)
			if const.ENoError == self.__verify_current_file(self.__remote_json, False) \
				and not (self.__downloader[:5] == const.DownloaderAria2 and os.path.exists(localfile + '.aria2')):
				self.pd("Same local file '{}' already exists, skip downloading".format(localfile))
				self.__remove_remote_on_success(remotefile)
				return const.ENoError
			else:
				if not self.shalloverwrite("Same-name locale file '{}' exists but is different, "
						"do you want to overwrite it? [y/N]".format(localfile)):
					pinfo("Same-name local file '{}' exists but is different, skip downloading".format(localfile))
					#return const.ENoError
					return const.ESkipped

			if self.__resumedownload and \
				self.__compare_size(self.__current_file_size, self.__remote_json) == 2:
				if self.__resumedl_revertcount < 0:
					if self.__current_file_size:
						offset = self.__current_file_size
				else:
					# revert back at least self.__resumedl_revertcount download chunk(s), default: one
					pieces = self.__current_file_size // self.__dl_chunk_size
					if pieces > self.__resumedl_revertcount:
						offset = (pieces - self.__resumedl_revertcount) * self.__dl_chunk_size
		elif os.path.isdir(localfile):
			if not self.shalloverwrite("Same-name directory '{}' exists, "
				"do you want to remove it? [y/N]".format(localfile)):

"Error: Your Python 'multiprocess' library is probably "
						"not properly installed (missing C extensions). "
						"You need to install a C compiler and Python headers before "
						"installing the Python 'multiprocess' library. "
						"(All these hassles could have been saved if Python's builtin "
						"'multiprocessing' works properly, sigh.)\n"
						"Fix for debian derivatives:\n"
						"- Install gcc: # apt-get install gcc\n"
						"- Install python-dev: # apt-get install python-dev\n"
						"- Reinstall Python 'multiprocess' library:\n"
						"  # pip uninstall -y multiprocess\n"
						"  # pip install -v multiprocess\n"
						"- If there's no errors/warnings in the above actions, "
						"then this error should be gone when you run 'bypy' with '{}' again.\n"
						).format(formatex(pe), const.MultiprocessOption)
				perr(errmsg)
				self.quit(const.EFatal)

#return const.ENoError
				return const.ESkipped

			self.pv("Directory with the same name '{}' exists, removing ...".format(localfile))
			result = removedir(localfile, self.verbose)
			if result == const.ENoError:
				self.pv("Removed")
			else:
				perr("Error removing the directory '{}'".format(localfile))
				return result

		ldir, file = os.path.split(localfile)
		if ldir and not os.path.exists(ldir):
			result = makedir(ldir, verbose = self.verbose)
			if result != const.ENoError:
				perr("Fail to make directory '{}'".format(ldir))
				return result

		if self.__downloader[:5] == const.DownloaderAria2:
			result = self.__down_aria2c(rfile, localfile)
		else:
			result = self.__downchunks(rfile, offset)

		if result == const.ENoError:
			self.__remove_remote_on_success(remotefile)

		return result

def __request_work_die(self, ex, url, pars, r, act):
		result = const.EFatal
		self.__dump_exception(ex, url, pars, r, act)
		perr("Fatal Exception, no way to continue.\nQuitting...\n")
		perr("If the error is reproducible, run the program with `-dv` arguments again to get more info.\n")
		self.quit(result)
		# we eat the exception, and use return code as the only

"--------------------------------\n"
						"Error: Your Python 'multiprocess' library is probably "
						"not properly installed (missing C extensions). "
						"You need to install a C compiler and Python headers before "
						"installing the Python 'multiprocess' library. "
						"(All these hassles could have been saved if Python's builtin "
						"'multiprocessing' works properly, sigh.)\n"
						"Fix for debian derivatives:\n"
						"- Install gcc: # apt-get install gcc\n"
						"- Install python-dev: # apt-get install python-dev\n"
						"- Reinstall Python 'multiprocess' library:\n"
						"  # pip uninstall -y multiprocess\n"
						"  # pip install -v multiprocess\n"
						"- If there's no errors/warnings in the above actions, "
						"then this error should be gone when you run 'bypy' with '{}' again.\n"
						).format(formatex(pe), const.MultiprocessOption)
				perr(errmsg)
				self.quit(const.EFatal)

# no need to call __load_local_json() again as __auth() will load the json & acess token.
			result = self.__auth()
			if result != const.ENoError:
				perr("Program authorization FAILED.\n"
					"You need to authorize this program before using any PCS functions.\n"
					"Quitting...\n")
				self.quit(result)

		for proxy in ['HTTP_PROXY', 'HTTPS_PROXY']:
			if proxy in os.environ:
				pr("{} used: {}".format(proxy, os.environ[proxy]))

		# update check
		check_update = False
		nowsec = int(time.time())
		if const.SettingKey_LastUpdateCheckTime not in self.__setting:
			check_update = True
		else:
			lastcheck = self.__setting[const.SettingKey_LastUpdateCheckTime]
			if nowsec - lastcheck > 7 * 24 * 60 * 60: # check every 7 days
				check_update = True

		if check_update:
			r = requests.get('https://raw.githubusercontent.com/houtianze/bypy/master/update/update.json')
			if r.status_code == 200:
				try:
					j = r.json()
					min_ver_key = 'minimumRequiredVersion'
					if min_ver_key in j:
						minver = j[min_ver_key]
						if comp_semver(const.__version__, minver) < 0:
							perr("Your current version ({}) is too low, "

"not properly installed (missing C extensions). "
						"You need to install a C compiler and Python headers before "
						"installing the Python 'multiprocess' library. "
						"(All these hassles could have been saved if Python's builtin "
						"'multiprocessing' works properly, sigh.)\n"
						"Fix for debian derivatives:\n"
						"- Install gcc: # apt-get install gcc\n"
						"- Install python-dev: # apt-get install python-dev\n"
						"- Reinstall Python 'multiprocess' library:\n"
						"  # pip uninstall -y multiprocess\n"
						"  # pip install -v multiprocess\n"
						"- If there's no errors/warnings in the above actions, "
						"then this error should be gone when you run 'bypy' with '{}' again.\n"
						).format(formatex(pe), const.MultiprocessOption)
				perr(errmsg)
				self.quit(const.EFatal)

self.__remote_json = {}
		self.__slice_md5s = []
		self.__cookies = {}
		# TODO: whether this works is still to be tried out
		self.__isrev = False
		self.__rapiduploaded = False

		# store the response object, mainly for testing.
		self.response = object()
		# store function-specific result data
		self.result = {}

		if not self.__load_local_json():
			# no need to call __load_local_json() again as __auth() will load the json & acess token.
			result = self.__auth()
			if result != const.ENoError:
				perr("Program authorization FAILED.\n"
					"You need to authorize this program before using any PCS functions.\n"
					"Quitting...\n")
				self.quit(result)

		for proxy in ['HTTP_PROXY', 'HTTPS_PROXY']:
			if proxy in os.environ:
				pr("{} used: {}".format(proxy, os.environ[proxy]))

		# update check
		check_update = False
		nowsec = int(time.time())
		if const.SettingKey_LastUpdateCheckTime not in self.__setting:
			check_update = True
		else:
			lastcheck = self.__setting[const.SettingKey_LastUpdateCheckTime]