import time
 
def calculate_prime(n):
    primes = []
    for num in range(2, n):
        is_prime = True
        for i in range(2, int(num**0.5)+1):
            if num % i == 0:
                is_prime = False
                break
        if is_prime:
            primes.append(num)
    return primes
 
start_time = time.time()  # 記錄開始時(shí)間戳
primes = calculate_prime(10000)
end_time = time.time()    # 記錄結(jié)束時(shí)間戳
 
print(f"耗時(shí)：{end_time - start_time:.4f}秒")
# 輸出：耗時(shí)：0.1234秒

from contextlib import contextmanager
 
@contextmanager
def timer():
    start = time.time()
    yield
    print(f"耗時(shí)：{time.time() - start:.4f}秒")
 
# 使用示例
with timer():
    data = [x**2 for x in range(1000000)]
# 輸出：耗時(shí)：0.0456秒

import time
import requests
 
def fetch_data():
    response = requests.get("https://api.example.com/data")
    return response.json()
 
while True:
    data = fetch_data()
    print(f"獲取數(shù)據(jù)：{len(data)}條")
    time.sleep(60)  # 每分鐘采集一次

import time
 
def log(message):
    timestamp = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
    print(f"[{timestamp}] {message}")
 
log("用戶登錄成功")
# 輸出：[2023-09-25 14:30:45] 用戶登錄成功

import time
 
def algorithm_a():
    # 算法A實(shí)現(xiàn)
    time.sleep(0.1)
 
def algorithm_b():
    # 算法B實(shí)現(xiàn)
    time.sleep(0.05)
 
start = time.perf_counter()
algorithm_a()
end = time.perf_counter()
print(f"算法A耗時(shí)：{end - start:.6f}秒")
 
start = time.perf_counter()
algorithm_b()
end = time.perf_counter()
print(f"算法B耗時(shí)：{end - start:.6f}秒")
# 輸出：
# 算法A耗時(shí)：0.100234秒
# 算法B耗時(shí)：0.050123秒

import time
import shutil
 
def backup_data():
    shutil.copy("data.db", "backup/data_backup.db")
    print("數(shù)據(jù)備份完成")
 
while True:
    current_hour = time.localtime().tm_hour
    if current_hour == 2:  # 凌晨2點(diǎn)執(zhí)行
        backup_data()
    time.sleep(3600)  # 每小時(shí)檢查一次

import schedule
import time
 
def job():
    print("定時(shí)任務(wù)執(zhí)行")
 
# 每天10:30執(zhí)行
schedule.every().day.at("10:30").do(job)
 
while True:
    schedule.run_pending()
    time.sleep(60)

import time
 
log_entry = "1695624645: ERROR - 數(shù)據(jù)庫(kù)連接失敗"
timestamp = int(log_entry.split(":")[0])
 
# 轉(zhuǎn)換為可讀時(shí)間
struct_time = time.localtime(timestamp)
readable_time = time.strftime("%Y-%m-%d %H:%M:%S", struct_time)
print(f"錯(cuò)誤發(fā)生時(shí)間：{readable_time}")
# 輸出：錯(cuò)誤發(fā)生時(shí)間：2023-09-25 14:30:45

import time
 
# 創(chuàng)建結(jié)構(gòu)化時(shí)間
struct_time = time.strptime("2023-09-25 14:30:45", "%Y-%m-%d %H:%M:%S")
# 轉(zhuǎn)換為時(shí)間戳
timestamp = time.mktime(struct_time)
print(f"時(shí)間戳：{int(timestamp)}")
# 輸出：時(shí)間戳：1695624645

import time
import requests
 
class APIWrapper:
    def __init__(self, rate_limit=60):
        self.rate_limit = rate_limit  # 每分鐘最大請(qǐng)求數(shù)
        self.request_times = []
 
    def _check_rate_limit(self):
        current_time = time.time()
        # 清理過期記錄（保留最近1分鐘的請(qǐng)求）
        self.request_times = [t for t in self.request_times if current_time - t < 60]
        if len(self.request_times) >= self.rate_limit:
            oldest = self.request_times[0]
            wait_time = 60 - (current_time - oldest)
            print(f"速率限制觸發(fā)，等待{wait_time:.2f}秒")
            time.sleep(wait_time + 0.1)  # 額外緩沖時(shí)間
 
    def get(self, url):
        self._check_rate_limit()
        response = requests.get(url)
        self.request_times.append(time.time())
        return response
 
# 使用示例
api = APIWrapper(rate_limit=60)
response = api.get("https://api.example.com/data")
print(response.status_code)