def?find_first_match(data,?condition):
????for?item?in?data:
????????if?condition(item):
????????????return?item
????raise?ValueError('No?matching?item?found')

large_data?=?[i?for?i?in?range(10000000)]??#?構(gòu)造一個(gè)大數(shù)據(jù)集合
match?=?find_first_match(large_data,?lambda?x:?x?>?1000)??#?查找第一個(gè)大于?1000?的元素
print(match)

def?char_count(words):
????counts?=?{}
????for?word?in?words:
????????for?char?in?word:
????????????counts[char]?=?counts.get(char,?0)?+?1
????return?counts

def?char_count_lazy(words):
????def?char_gen(words):
????????for?word?in?words:
????????????for?char?in?word:
????????????????yield?char
????counts?=?{}
????for?char?in?char_gen(words):
????????counts[char]?=?counts.get(char,?0)?+?1
????return?counts

def?find_value(json_obj,?target_key):
????if?isinstance(json_obj,?dict):
????????for?key,?value?in?json_obj.items():
????????????if?key?==?target_key:
????????????????yield?value
????????????else:
????????????????yield?from?find_value(value,?target_key)
????elif?isinstance(json_obj,?list):
????????for?item?in?json_obj:
????????????yield?from?find_value(item,?target_key)

json_data?=?{
????"name":?"tantianran",
????"age":?30,
????"cars":?[
????????{"model":?"BMW",?"year":?2000},
????????{"model":?"Tesla",?"year":?2020}
????],
????"location":?{
????????"address":?"123?Main?St",
????????"city":?"New?York",
????????"state":?"NY"
????}
}

for?value?in?find_value(json_data,?"year"):
????print(value)

def?process_lines(file_name):
????with?open(file_name)?as?f:
????????for?line?in?f:
????????????#?對(duì)每一行進(jìn)行處理，這里只是簡(jiǎn)單地打印出來(lái)
????????????print(line.strip())

large_file?=?'data.txt'
process_lines(large_file)

def?log_file_reader(log_file_path):
????with?open(log_file_path)?as?f:
????????for?line?in?f:
????????????yield?line.strip()

def?log_analyzer(log_file_path,?keyword):
????log_reader?=?log_file_reader(log_file_path)
????count?=?0
????for?line?in?log_reader:
????????if?keyword?in?line:
????????????count?+=?1
????return?count

log_file_path?=?'logs.txt'
keyword?=?'error'
error_count?=?log_analyzer(log_file_path,?keyword)
print(f'The?number?of?error?logs?is:?{error_count}')