{"id":1091647,"date":"2025-01-08T14:13:43","date_gmt":"2025-01-08T06:13:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1091647.html"},"modified":"2025-01-08T14:13:46","modified_gmt":"2025-01-08T06:13:46","slug":"%e5%a6%82%e4%bd%95%e5%8f%96%e5%87%ba%e5%88%97%e8%a1%a8%e4%b8%ad%e7%9a%84%e5%85%83%e7%b4%a0python-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1091647.html","title":{"rendered":"\u5982\u4f55\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20python"},"content":{"rendered":"

\"\u5982\u4f55\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20python\"<\/p>\n

\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u5305\u62ec\u7d22\u5f15\u3001\u5207\u7247\u3001\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f<\/strong>\u7b49\u3002\u901a\u8fc7\u7d22\u5f15\u53d6\u503c<\/strong>\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u8d1f\u7d22\u5f15\u8868\u793a\u4ece\u5217\u8868\u672b\u5c3e\u53cd\u5411\u8ba1\u6570\u3002\u4ee5\u4e0b\u5c06\u8be6\u7ec6\u89e3\u91ca\u6bcf\u79cd\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u5e76\u63d0\u4f9b\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<\/p>\n

\u5982\u4f55\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20python<\/strong><\/h2>\n

\u5728Python\u4e2d\uff0c\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\u7d22\u5f15\u3001\u5207\u7247\u3001\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f<\/strong>\u7b49\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u4f7f\u7528\u573a\u666f\u3002\u5176\u4e2d\uff0c\u901a\u8fc7\u7d22\u5f15\u53d6\u503c\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00<\/strong>\uff0c\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u8d1f\u7d22\u5f15\u8868\u793a\u4ece\u5217\u8868\u672b\u5c3e\u53cd\u5411\u8ba1\u6570\u3002\u4e0b\u9762\u662f\u8be6\u7ec6\u7684\u89e3\u91ca\u548c\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u901a\u8fc7\u7d22\u5f15\u53d6\u51fa\u5143\u7d20<\/h2>\n<\/p>\n

\u901a\u8fc7\u7d22\u5f15\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u7d22\u5f15\u4ece0\u5f00\u59cb\u8ba1\u6570\uff0c\u8d1f\u7d22\u5f15\u8868\u793a\u4ece\u5217\u8868\u672b\u5c3e\u53cd\u5411\u8ba1\u6570\u3002<\/p>\n<\/p>\n

my_list = [10, 20, 30, 40, 50]<\/p>\n
print(my_list[0])  # \u8f93\u51fa 10<\/p>\n
print(my_list[-1]) # \u8f93\u51fa 50<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b63\u7d22\u5f15\u4e0e\u8d1f\u7d22\u5f15<\/strong>\uff1a\u6b63\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u8868\u793a\u4ece\u5217\u8868\u5f00\u5934\u5f00\u59cb\u8ba1\u6570\uff1b\u8d1f\u7d22\u5f15\u4ece-1\u5f00\u59cb\uff0c\u8868\u793a\u4ece\u5217\u8868\u672b\u5c3e\u5f00\u59cb\u8ba1\u6570\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u4efb\u610f\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u901a\u8fc7\u5207\u7247\u53d6\u51fa\u5143\u7d20<\/h2>\n<\/p>\n
\u5207\u7247\u662f\u6307\u4ece\u5217\u8868\u4e2d\u53d6\u51fa\u4e00\u90e8\u5206\u5143\u7d20\uff0c\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002\u5207\u7247\u8bed\u6cd5\u4e3alist[start:end:step]<\/code>\uff0c\u5176\u4e2dstart<\/code>\u8868\u793a\u8d77\u59cb\u7d22\u5f15\uff0cend<\/code>\u8868\u793a\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\uff0cstep<\/code>\u8868\u793a\u6b65\u957f\u3002<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
print(my_list[1:4])  # \u8f93\u51fa [20, 30, 40]<\/p>\n
print(my_list[:3])   # \u8f93\u51fa [10, 20, 30]<\/p>\n
print(my_list[2:])   # \u8f93\u51fa [30, 40, 50]<\/p>\n
print(my_list[::2])  # \u8f93\u51fa [10, 30, 50]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7075\u6d3b\u6027<\/strong>\uff1a\u5207\u7247\u64cd\u4f5c\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574start<\/code>\u3001end<\/code>\u3001step<\/code>\u7684\u503c\u6765\u83b7\u53d6\u4e0d\u540c\u7684\u5b50\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u901a\u8fc7\u5faa\u73af\u904d\u5386\u53d6\u51fa\u5143\u7d20<\/h2>\n<\/p>\n
\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002\u5e38\u7528\u7684\u5faa\u73af\u65b9\u5f0f\u6709for<\/code>\u5faa\u73af\u548cwhile<\/code>\u5faa\u73af\u3002<\/p>\n<\/p>\n
1. \u4f7f\u7528 for<\/code> \u5faa\u73af<\/h3>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
for item in my_list:<\/p>\n
    print(item)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u4f7f\u7528 while<\/code> \u5faa\u73af<\/h3>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
i = 0<\/p>\n
while i < len(my_list):<\/p>\n
    print(my_list[i])<\/p>\n
    i += 1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u904d\u5386<\/strong>\uff1a\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\uff0c\u53ef\u4ee5\u5bf9\u6bcf\u4e2a\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9010\u4e00\u5904\u7406\u5217\u8868\u4e2d\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u56db\u3001\u901a\u8fc7\u5217\u8868\u63a8\u5bfc\u5f0f\u53d6\u51fa\u5143\u7d20<\/h2>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u7528\u4e8e\u521b\u5efa\u65b0\u7684\u5217\u8868\u3002\u53ef\u4ee5\u5728\u5217\u8868\u63a8\u5bfc\u5f0f\u4e2d\u52a0\u5165\u6761\u4ef6\u5224\u65ad\uff0c\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
new_list = [x for x in my_list if x > 20]<\/p>\n
print(new_list)  # \u8f93\u51fa [30, 40, 50]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7b80\u6d01\u6027<\/strong>\uff1a\u5217\u8868\u63a8\u5bfc\u5f0f\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\uff0c\u53ef\u8bfb\u6027\u66f4\u9ad8\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5bf9\u5217\u8868\u8fdb\u884c\u7b5b\u9009\u6216\u8f6c\u6362\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u901a\u8fc7 enumerate<\/code> \u53d6\u51fa\u5143\u7d20\u53ca\u5176\u7d22\u5f15<\/h2>\n<\/p>\n
enumerate<\/code> \u51fd\u6570\u7528\u4e8e\u5728\u904d\u5386\u5217\u8868\u65f6\u540c\u65f6\u83b7\u53d6\u5143\u7d20\u53ca\u5176\u7d22\u5f15\u3002<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
for index, value in enumerate(my_list):<\/p>\n
    print(f"Index: {index}, Value: {value}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u540c\u65f6\u83b7\u53d6\u7d22\u5f15\u548c\u503c<\/strong>\uff1a\u4f7f\u7528enumerate<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u904d\u5386\u5217\u8868\u65f6\u540c\u65f6\u83b7\u53d6\u5143\u7d20\u7684\u7d22\u5f15\u548c\u503c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u540c\u65f6\u5904\u7406\u5143\u7d20\u548c\u5176\u7d22\u5f15\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u516d\u3001\u901a\u8fc7 zip<\/code> \u53d6\u51fa\u591a\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
zip<\/code> \u51fd\u6570\u7528\u4e8e\u5c06\u591a\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20\u6253\u5305\u6210\u5143\u7ec4\uff0c\u7136\u540e\u8fd4\u56de\u7531\u8fd9\u4e9b\u5143\u7ec4\u7ec4\u6210\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
list1 = [1, 2, 3]<\/p>\n
list2 = ['a', 'b', 'c']<\/p>\n
for num, char in zip(list1, list2):<\/p>\n
    print(f"Number: {num}, Char: {char}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7ec4\u5408\u591a\u4e2a\u5217\u8868<\/strong>\uff1a\u4f7f\u7528zip<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5c06\u591a\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u9002\u7528\u4e8e\u9700\u8981\u540c\u65f6\u5904\u7406\u591a\u4e2a\u5217\u8868\u4e2d\u5bf9\u5e94\u4f4d\u7f6e\u7684\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u901a\u8fc7 numpy<\/code> \u53d6\u51fa\u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
numpy<\/code> \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u53ef\u4ee5\u7528\u4e8e\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u3002\u901a\u8fc7numpy<\/code>\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u53d6\u51fa\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
arr = np.array([10, 20, 30, 40, 50])<\/p>\n
print(arr[2])  # \u8f93\u51fa 30<\/p>\n
print(arr[1:4])  # \u8f93\u51fa [20 30 40]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5904\u7406\u591a\u7ef4\u6570\u7ec4<\/strong>\uff1anumpy<\/code>\u5e93\u9002\u7528\u4e8e\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u548c\u8fdb\u884c\u590d\u6742\u7684\u6570\u503c\u8ba1\u7b97\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5904\u7406\u5927\u91cf\u6570\u636e\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u516b\u3001\u901a\u8fc7 pandas<\/code> \u53d6\u51fa\u6570\u636e\u6846\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
pandas<\/code> \u662f\u4e00\u4e2a\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5e93\uff0c\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784DataFrame<\/code>\u3002\u901a\u8fc7pandas<\/code>\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u53d6\u51fa\u6570\u636e\u6846\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
df = pd.DataFrame({'A': [10, 20, 30], 'B': [40, 50, 60]})<\/p>\n
print(df['A'][1])  # \u8f93\u51fa 20<\/p>\n
print(df.loc[1, 'B'])  # \u8f93\u51fa 50<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6570\u636e\u5206\u6790\u548c\u5904\u7406<\/strong>\uff1apandas<\/code>\u5e93\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784\u548c\u4e30\u5bcc\u7684\u6570\u636e\u5904\u7406\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u901a\u8fc7 deque<\/code> \u53d6\u51fa\u53cc\u7aef\u961f\u5217\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
collections<\/code>\u6a21\u5757\u4e2d\u7684deque<\/code>\u63d0\u4f9b\u4e86\u53cc\u7aef\u961f\u5217\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4ece\u4e24\u7aef\u6dfb\u52a0\u6216\u53d6\u51fa\u5143\u7d20\u3002<\/p>\n<\/p>\n
from collections import deque<\/p>\n
dq = deque([10, 20, 30, 40, 50])<\/p>\n
print(dq.popleft())  # \u8f93\u51fa 10<\/p>\n
print(dq.pop())  # \u8f93\u51fa 50<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u53cc\u7aef\u961f\u5217<\/strong>\uff1adeque<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u53cc\u7aef\u961f\u5217\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u5730\u4ece\u4e24\u7aef\u6dfb\u52a0\u6216\u53d6\u51fa\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u3001\u901a\u8fc7 itertools<\/code> \u53d6\u51fa\u8fed\u4ee3\u5668\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
itertools<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u8fed\u4ee3\u5668\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u548c\u64cd\u4f5c\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n
import itertools<\/p>\n
iter1 = itertools.count(10, 2)<\/p>\n
print(next(iter1))  # \u8f93\u51fa 10<\/p>\n
print(next(iter1))  # \u8f93\u51fa 12<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u9ad8\u6548\u8fed\u4ee3<\/strong>\uff1aitertools<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8fed\u4ee3\u5668\u51fd\u6570\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u8fed\u4ee3\u548c\u5904\u7406\u5e8f\u5217\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e00\u3001\u901a\u8fc7 map<\/code> \u53d6\u51fa\u6620\u5c04\u7ed3\u679c\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
map<\/code>\u51fd\u6570\u7528\u4e8e\u5c06\u6307\u5b9a\u7684\u51fd\u6570\u5e94\u7528\u4e8e\u5217\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n
def square(x):<\/p>\n
    return x * 2<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
result = map(square, my_list)<\/p>\n
print(list(result))  # \u8f93\u51fa [2, 4, 6, 8, 10]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u51fd\u6570\u6620\u5c04<\/strong>\uff1amap<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u9700\u8981\u5bf9\u5217\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\u5e94\u7528\u67d0\u4e2a\u51fd\u6570\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e8c\u3001\u901a\u8fc7 filter<\/code> \u53d6\u51fa\u7b5b\u9009\u7ed3\u679c\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
filter<\/code>\u51fd\u6570\u7528\u4e8e\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n
def is_even(x):<\/p>\n
    return x % 2 == 0<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
result = filter(is_even, my_list)<\/p>\n
print(list(result))  # \u8f93\u51fa [2, 4]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6761\u4ef6\u7b5b\u9009<\/strong>\uff1afilter<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u9700\u8981\u6839\u636e\u67d0\u4e2a\u6761\u4ef6\u7b5b\u9009\u5217\u8868\u4e2d\u7684\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e09\u3001\u901a\u8fc7 reduce<\/code> \u53d6\u51fa\u5f52\u7ea6\u7ed3\u679c\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
reduce<\/code>\u51fd\u6570\u7528\u4e8e\u5bf9\u5217\u8868\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u5f52\u7ea6\u64cd\u4f5c\uff0c\u8fd4\u56de\u4e00\u4e2a\u5355\u4e00\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n
from functools import reduce<\/p>\n
def add(x, y):<\/p>\n
    return x + y<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
result = reduce(add, my_list)<\/p>\n
print(result)  # \u8f93\u51fa 15<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5f52\u7ea6\u64cd\u4f5c<\/strong>\uff1areduce<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u9700\u8981\u5bf9\u5217\u8868\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u5f52\u7ea6\u64cd\u4f5c\uff0c\u5f97\u5230\u4e00\u4e2a\u5355\u4e00\u7ed3\u679c\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u56db\u3001\u901a\u8fc7 heapq<\/code> \u53d6\u51fa\u5806\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
heapq<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u5806\u64cd\u4f5c\u51fd\u6570\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4ece\u5806\u4e2d\u53d6\u51fa\u5143\u7d20\u3002<\/p>\n<\/p>\n
import heapq<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
heapq.heapify(my_list)<\/p>\n
print(heapq.heappop(my_list))  # \u8f93\u51fa 10<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5806\u64cd\u4f5c<\/strong>\uff1aheapq<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u5806\u64cd\u4f5c\u51fd\u6570\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u5730\u4ece\u5806\u4e2d\u53d6\u51fa\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e94\u3001\u901a\u8fc7 bisect<\/code> \u53d6\u51fa\u6709\u5e8f\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
bisect<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u4e8c\u5206\u67e5\u627e\u51fd\u6570\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5728\u6709\u5e8f\u5217\u8868\u4e2d\u63d2\u5165\u548c\u67e5\u627e\u5143\u7d20\u3002<\/p>\n<\/p>\n
import bisect<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
index = bisect.bisect_left(my_list, 30)<\/p>\n
print(my_list[index])  # \u8f93\u51fa 30<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u5206\u67e5\u627e<\/strong>\uff1abisect<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u4e8c\u5206\u67e5\u627e\u51fd\u6570\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5728\u6709\u5e8f\u5217\u8868\u4e2d\u63d2\u5165\u548c\u67e5\u627e\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u516d\u3001\u901a\u8fc7 collections.Counter<\/code> \u53d6\u51fa\u8ba1\u6570\u7ed3\u679c\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
collections.Counter<\/code>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u53ef\u4ee5\u7528\u4e8e\u7edf\u8ba1\u5217\u8868\u4e2d\u5143\u7d20\u7684\u51fa\u73b0\u6b21\u6570\u3002<\/p>\n<\/p>\n
from collections import Counter<\/p>\n
my_list = [10, 20, 30, 10, 20, 10]<\/p>\n
counter = Counter(my_list)<\/p>\n
print(counter[10])  # \u8f93\u51fa 3<\/p>\n
print(counter.most_common(1))  # \u8f93\u51fa [(10, 3)]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8ba1\u6570\u5668<\/strong>\uff1acollections.Counter<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u8ba1\u6570\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u7edf\u8ba1\u5217\u8868\u4e2d\u5143\u7d20\u51fa\u73b0\u6b21\u6570\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e03\u3001\u901a\u8fc7 defaultdict<\/code> \u53d6\u51fa\u9ed8\u8ba4\u5b57\u5178\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
collections.defaultdict<\/code>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5e26\u6709\u9ed8\u8ba4\u503c\u7684\u5b57\u5178\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5904\u7406\u4e0d\u5b58\u5728\u7684\u952e\u3002<\/p>\n<\/p>\n
from collections import defaultdict<\/p>\n
my_dict = defaultdict(int)<\/p>\n
my_dict['a'] += 1<\/p>\n
print(my_dict['a'])  # \u8f93\u51fa 1<\/p>\n
print(my_dict['b'])  # \u8f93\u51fa 0<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u9ed8\u8ba4\u5b57\u5178<\/strong>\uff1acollections.defaultdict<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u9ed8\u8ba4\u5b57\u5178\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5904\u7406\u4e0d\u5b58\u5728\u7684\u952e\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u516b\u3001\u901a\u8fc7 namedtuple<\/code> \u53d6\u51fa\u547d\u540d\u5143\u7ec4\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
collections.namedtuple<\/code>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u547d\u540d\u5143\u7ec4\uff0c\u53ef\u4ee5\u901a\u8fc7\u540d\u79f0\u8bbf\u95ee\u5143\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
from collections import namedtuple<\/p>\n
Point = namedtuple('Point', ['x', 'y'])<\/p>\n
p = Point(10, 20)<\/p>\n
print(p.x)  # \u8f93\u51fa 10<\/p>\n
print(p.y)  # \u8f93\u51fa 20<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u547d\u540d\u5143\u7ec4<\/strong>\uff1acollections.namedtuple<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u547d\u540d\u5143\u7ec4\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u901a\u8fc7\u540d\u79f0\u8bbf\u95ee\u5143\u7ec4\u4e2d\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5341\u4e5d\u3001\u901a\u8fc7 deque<\/code> \u53d6\u51fa\u53cc\u7aef\u961f\u5217\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
collections.deque<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u53cc\u7aef\u961f\u5217\u64cd\u4f5c\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4ece\u4e24\u7aef\u6dfb\u52a0\u6216\u53d6\u51fa\u5143\u7d20\u3002<\/p>\n<\/p>\n
from collections import deque<\/p>\n
dq = deque([10, 20, 30, 40, 50])<\/p>\n
print(dq.popleft())  # \u8f93\u51fa 10<\/p>\n
print(dq.pop())  # \u8f93\u51fa 50<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u53cc\u7aef\u961f\u5217<\/strong>\uff1acollections.deque<\/code>\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u53cc\u7aef\u961f\u5217\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u5730\u4ece\u4e24\u7aef\u6dfb\u52a0\u6216\u53d6\u51fa\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e8c\u5341\u3001\u901a\u8fc7 array<\/code> \u53d6\u51fa\u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n
array<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u53d6\u51fa\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
import array<\/p>\n
arr = array.array('i', [10, 20, 30, 40, 50])<\/p>\n
print(arr[2])  # \u8f93\u51fa 30<\/p>\n
print(arr[1:4])  # \u8f93\u51fa array('i', [20, 30, 40])<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6570\u7ec4\u64cd\u4f5c<\/strong>\uff1aarray<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5904\u7406\u5927\u91cf\u6570\u636e\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u603b\u7ed3\uff1aPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u5305\u62ec\u7d22\u5f15\u3001\u5207\u7247\u3001\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u7b49\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6267\u884c\u6548\u7387\u3002\u5e0c\u671b\u4ee5\u4e0a\u5185\u5bb9\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u7279\u5b9a\u5143\u7d20\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u63d0\u53d6\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u3002\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\uff0c\u4f8b\u5982\u4f7f\u7528list[index]<\/code>\u7684\u65b9\u5f0f\u83b7\u53d6\u7279\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u64cd\u4f5clist[start:end]<\/code>\u6765\u63d0\u53d6\u4e00\u6bb5\u8303\u56f4\u5185\u7684\u5143\u7d20\u3002\u5982\u679c\u9700\u8981\u6839\u636e\u6761\u4ef6\u7b5b\u9009\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\uff0c\u4f8b\u5982[x for x in list if condition]<\/code>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u63d0\u53d6\u6240\u9700\u7684\u5143\u7d20\u3002<\/p>\n
\u5982\u4f55\u5220\u9664Python\u5217\u8868\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\uff1f<\/strong>
\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\u3002\u4f7f\u7528remove(value)<\/code>\u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u503c\u5220\u9664\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\uff0c\u800c\u4f7f\u7528pop(index)<\/code>\u65b9\u6cd5\u5219\u53ef\u4ee5\u5220\u9664\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\u5e76\u8fd4\u56de\u8be5\u5143\u7d20\u3002\u5982\u679c\u60f3\u8981\u5220\u9664\u6240\u6709\u5339\u914d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u7ed3\u5408\u5217\u8868\u63a8\u5bfc\u5f0f\u6216filter()<\/code>\u51fd\u6570\u3002\u786e\u4fdd\u5728\u64cd\u4f5c\u4e4b\u524d\u4e86\u89e3\u5217\u8868\u7684\u7ed3\u6784\uff0c\u4ee5\u907f\u514d\u610f\u5916\u5220\u9664\u91cd\u8981\u5143\u7d20\u3002<\/p>\n
\u5982\u4f55\u68c0\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8ePython\u5217\u8868\u4e2d\uff1f<\/strong>
\u8981\u68c0\u67e5\u67d0\u4e2a\u5143\u7d20\u662f\u5426\u5728\u5217\u8868\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528in<\/code>\u8fd0\u7b97\u7b26\uff0c\u4f8b\u5982if value in list:<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u89c2\uff0c\u8fd4\u56de\u5e03\u5c14\u503c\uff0c\u8868\u793a\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u5217\u8868\u4e2d\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528list.count(value)<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u5143\u7d20\u5728\u5217\u8868\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\uff0c\u8fd9\u5bf9\u4e8e\u4e86\u89e3\u5143\u7d20\u7684\u91cd\u590d\u60c5\u51b5\u975e\u5e38\u6709\u7528\u3002\u8fd9\u4e9b\u65b9\u6cd5\u80fd\u5e2e\u52a9\u7528\u6237\u6709\u6548\u5730\u9a8c\u8bc1\u5217\u8868\u4e2d\u7684\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u53d6\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u5305\u62ec\u7d22\u5f15\u3001\u5207\u7247\u3001\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u7b49\u3002\u901a\u8fc7\u7d22\u5f15\u53d6\u503c\u662f\u6700\u5e38\u7528\u7684\u65b9 […]","protected":false},"author":3,"featured_media":1091652,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1091647"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1091647"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1091647\/revisions"}],"predecessor-version":[{"id":1091654,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1091647\/revisions\/1091654"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1091652"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1091647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1091647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1091647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}