{"id":1155944,"date":"2025-01-13T18:10:05","date_gmt":"2025-01-13T10:10:05","guid":{"rendered":""},"modified":"2025-01-13T18:10:07","modified_gmt":"2025-01-13T10:10:07","slug":"python%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e8%bf%94%e5%9b%9e%e6%95%b4%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1155944.html","title":{"rendered":"python\u5217\u8868\u5982\u4f55\u8fd4\u56de\u6574\u6570"},"content":{"rendered":"

\"python\u5217\u8868\u5982\u4f55\u8fd4\u56de\u6574\u6570\"<\/p>\n

\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4ece\u5217\u8868\u4e2d\u8fd4\u56de\u6574\u6570\u3002\u4f7f\u7528\u7d22\u5f15\u3001\u4f7f\u7528\u5207\u7247\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3001\u4f7f\u7528filter\u51fd\u6570<\/strong>\u7b49\u662f\u5e38\u89c1\u7684\u65b9\u6cd5\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u7684\u4f7f\u7528\u7d22\u5f15<\/strong>\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4f7f\u7528\u7d22\u5f15\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u6570\u636e\u7c7b\u578b\u7684\u5217\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u7d22\u5f15\u6765\u8bbf\u95ee\u8be5\u5217\u8868\u4e2d\u7684\u6574\u6570\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

my_list = [1, 'a', 3.14, 2, 'b', 5]<\/p>\n
integer_element = my_list[0]  # \u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a1<\/p>\n
print(integer_element)  # \u8f93\u51fa\uff1a1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u6307\u5b9a\u7d22\u5f15\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff0c\u5982\u679c\u8be5\u5143\u7d20\u662f\u6574\u6570\u7c7b\u578b\uff0c\u5219\u8fd4\u56de\u8be5\u6574\u6570\u3002\u63a5\u4e0b\u6765\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4ed6\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528\u7d22\u5f15<\/h3>\n<\/p>\n
\u4f7f\u7528\u7d22\u5f15\u662f\u4ece\u5217\u8868\u4e2d\u83b7\u53d6\u5143\u7d20\u7684\u57fa\u672c\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u7d22\u5f15\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
first_element = my_list[0]  # \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20<\/p>\n
print(first_element)  # \u8f93\u51fa\uff1a10<\/p>\n
second_element = my_list[1]  # \u83b7\u53d6\u7b2c\u4e8c\u4e2a\u5143\u7d20<\/p>\n
print(second_element)  # \u8f93\u51fa\uff1a20<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u56e0\u6b64\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u4e3a0\uff0c\u7b2c\u4e8c\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u4e3a1\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u5207\u7247<\/h3>\n<\/p>\n
\u5207\u7247\u662f\u4e00\u79cd\u66f4\u5f3a\u5927\u7684\u4ece\u5217\u8868\u4e2d\u83b7\u53d6\u591a\u4e2a\u5143\u7d20\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u5f00\u59cb\u548c\u7ed3\u675f\u7d22\u5f15\u6765\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\u5143\u7d20\u3002<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
sub_list = my_list[1:4]  # \u83b7\u53d6\u4ece\u7b2c\u4e8c\u4e2a\u5143\u7d20\u5230\u7b2c\u56db\u4e2a\u5143\u7d20<\/p>\n
print(sub_list)  # \u8f93\u51fa\uff1a[20, 30, 40]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5207\u7247\u64cd\u4f5c\u7b26:<\/code>\u5141\u8bb8\u6211\u4eec\u4ece\u5217\u8868\u4e2d\u83b7\u53d6\u4e00\u6bb5\u8fde\u7eed\u7684\u5143\u7d20\u3002\u5207\u7247\u7684\u7ed3\u679c\u662f\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u5305\u542b\u4e86\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u4e14\u5f3a\u5927\u7684\u4ece\u5217\u8868\u4e2d\u7b5b\u9009\u5143\u7d20\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u7ed3\u5408\u6761\u4ef6\u8868\u8fbe\u5f0f\u6765\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
my_list = [1, 'a', 3.14, 2, 'b', 5]<\/p>\n
integer_list = [x for x in my_list if isinstance(x, int)]<\/p>\n
print(integer_list)  # \u8f93\u51fa\uff1a[1, 2, 5]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5217\u8868\u63a8\u5bfc\u5f0f [x for x in my_list if isinstance(x, int)]<\/code> \u4f1a\u904d\u5386 my_list<\/code> \u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u5c06\u6240\u6709\u6574\u6570\u5143\u7d20\u7b5b\u9009\u51fa\u6765\u7ec4\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528filter\u51fd\u6570<\/h3>\n<\/p>\n
filter<\/code> \u51fd\u6570\u4e5f\u662f\u4e00\u79cd\u4ece\u5217\u8868\u4e2d\u7b5b\u9009\u5143\u7d20\u7684\u65b9\u6cd5\u3002filter<\/code> \u51fd\u6570\u9700\u8981\u4e24\u4e2a\u53c2\u6570\uff1a\u4e00\u4e2a\u51fd\u6570\u548c\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002\u8be5\u51fd\u6570\u4f1a\u5e94\u7528\u4e8e\u53ef\u8fed\u4ee3\u5bf9\u8c61\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6240\u6709\u6ee1\u8db3\u8be5\u51fd\u6570\u6761\u4ef6\u7684\u5143\u7d20\u7684\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n
def is_integer(n):<\/p>\n
    return isinstance(n, int)<\/p>\n
my_list = [1, 'a', 3.14, 2, 'b', 5]<\/p>\n
integer_iterator = filter(is_integer, my_list)<\/p>\n
integer_list = list(integer_iterator)<\/p>\n
print(integer_list)  # \u8f93\u51fa\uff1a[1, 2, 5]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cis_integer<\/code> \u51fd\u6570\u7528\u4e8e\u68c0\u67e5\u5143\u7d20\u662f\u5426\u4e3a\u6574\u6570\u3002filter<\/code> \u51fd\u6570\u4f1a\u5e94\u7528 is_integer<\/code> \u51fd\u6570\u5230 my_list<\/code> \u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6240\u6709\u6574\u6570\u5143\u7d20\u7684\u8fed\u4ee3\u5668\u3002\u7136\u540e\u6211\u4eec\u5c06\u8fd9\u4e2a\u8fed\u4ee3\u5668\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528map\u51fd\u6570\u7ed3\u5408filter<\/h3>\n<\/p>\n
map<\/code> \u548c filter<\/code> \u51fd\u6570\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528\uff0c\u8fdb\u4e00\u6b65\u5904\u7406\u548c\u7b5b\u9009\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
def to_integer(n):<\/p>\n
    try:<\/p>\n
        return int(n)<\/p>\n
    except ValueError:<\/p>\n
        return None<\/p>\n
my_list = ['1', '2', '3.14', '4', 'a', '5']<\/p>\n
integer_iterator = map(to_integer, my_list)<\/p>\n
integer_list = [x for x in integer_iterator if x is not None]<\/p>\n
print(integer_list)  # \u8f93\u51fa\uff1a[1, 2, 4, 5]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cto_integer<\/code> \u51fd\u6570\u5c1d\u8bd5\u5c06\u5143\u7d20\u8f6c\u6362\u4e3a\u6574\u6570\uff0c\u5e76\u5728\u8f6c\u6362\u5931\u8d25\u65f6\u8fd4\u56de None<\/code>\u3002map<\/code> \u51fd\u6570\u4f1a\u5c06 to_integer<\/code> \u51fd\u6570\u5e94\u7528\u5230 my_list<\/code> \u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u8f6c\u6362\u7ed3\u679c\u7684\u8fed\u4ee3\u5668\u3002\u7136\u540e\u6211\u4eec\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7b5b\u9009\u51fa\u6240\u6709\u4e0d\u4e3a None<\/code> \u7684\u5143\u7d20\uff0c\u7ec4\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u53d6\u6574\u6570<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u80fd\u662f\u5b57\u7b26\u4e32\u5f62\u5f0f\u7684\u6570\u5b57\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u4ece\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u6574\u6570\u3002<\/p>\n<\/p>\n
import re<\/p>\n
my_list = ['abc123', '456def', 'ghi789']<\/p>\n
integer_list = [int(num) for item in my_list for num in re.findall(r'\\d+', item)]<\/p>\n
print(integer_list)  # \u8f93\u51fa\uff1a[123, 456, 789]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 re.findall<\/code> \u51fd\u6570\u4ece\u5b57\u7b26\u4e32\u5143\u7d20\u4e2d\u63d0\u53d6\u6240\u6709\u6574\u6570\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\uff0c\u7ec4\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u7ed3\u5408\u591a\u79cd\u65b9\u6cd5\u5904\u7406\u590d\u6742\u5217\u8868<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u80fd\u975e\u5e38\u590d\u6742\uff0c\u53ef\u80fd\u9700\u8981\u7ed3\u5408\u591a\u79cd\u65b9\u6cd5\u6765\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7efc\u5408\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
def extract_integers(item):<\/p>\n
    if isinstance(item, int):<\/p>\n
        return [item]<\/p>\n
    elif isinstance(item, str):<\/p>\n
        return [int(num) for num in re.findall(r'\\d+', item)]<\/p>\n
    elif isinstance(item, list):<\/p>\n
        return [int(x) for x in item if isinstance(x, (int, str)) and x.isdigit()]<\/p>\n
    else:<\/p>\n
        return []<\/p>\n
my_complex_list = [1, '23', [3, '45', 'abc'], '67def', 89, ['100', '200']]<\/p>\n
all_integers = []<\/p>\n
for item in my_complex_list:<\/p>\n
    all_integers.extend(extract_integers(item))<\/p>\n
print(all_integers)  # \u8f93\u51fa\uff1a[1, 23, 3, 45, 67, 89, 100, 200]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a extract_integers<\/code> \u51fd\u6570\uff0c\u7528\u4e8e\u4ece\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\u4e2d\u63d0\u53d6\u6574\u6570\u3002\u5bf9\u4e8e\u6574\u6570\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u76f4\u63a5\u8fd4\u56de\u5305\u542b\u8be5\u6574\u6570\u7684\u5217\u8868\uff1b\u5bf9\u4e8e\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u53d6\u6240\u6709\u6574\u6570\uff1b\u5bf9\u4e8e\u5217\u8868\u7c7b\u578b\u7684\u5143\u7d20\uff0c\u9012\u5f52\u63d0\u53d6\u5176\u4e2d\u7684\u6574\u6570\u3002\u6700\u540e\uff0c\u6211\u4eec\u904d\u5386 my_complex_list<\/code> \u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u5c06\u63d0\u53d6\u5230\u7684\u6574\u6570\u6dfb\u52a0\u5230 all_integers<\/code> \u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
\u516b\u3001\u4f7f\u7528NumPy\u5904\u7406\u6570\u5b57\u5217\u8868<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u5927\u91cf\u6570\u5b57\u65f6\uff0cNumPy \u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5e93\u3002NumPy \u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\u548c\u6570\u503c\u8ba1\u7b97\u529f\u80fd\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
my_array = np.array([1, 2, 3, 4, 5])<\/p>\n
integers = my_array[my_array % 1 == 0]<\/p>\n
print(integers)  # \u8f93\u51fa\uff1a[1 2 3 4 5]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a NumPy \u6570\u7ec4\uff0c\u5e76\u4f7f\u7528\u5e03\u5c14\u7d22\u5f15\u7b5b\u9009\u51fa\u6240\u6709\u6574\u6570\u5143\u7d20\u3002NumPy \u63d0\u4f9b\u4e86\u8bb8\u591a\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\u51fd\u6570\uff0c\u9002\u5408\u7528\u4e8e\u5927\u89c4\u6a21\u6570\u503c\u8ba1\u7b97\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u4f7f\u7528Pandas\u5904\u7406\u6570\u636e\u6846\u4e2d\u7684\u6574\u6570<\/h3>\n<\/p>\n
Pandas \u662f\u53e6\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u5e93\uff0c\u7279\u522b\u9002\u7528\u4e8e\u5904\u7406\u8868\u683c\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Pandas \u4ece\u6570\u636e\u6846\u4e2d\u63d0\u53d6\u6574\u6570\u5217\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
data = {'A': [1, 'a', 3.14, 2], 'B': [5, 'b', 6, 7]}<\/p>\n
df = pd.DataFrame(data)<\/p>\n
integer_columns = df.select_dtypes(include='number')<\/p>\n
print(integer_columns)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a Pandas \u6570\u636e\u6846\uff0c\u5e76\u4f7f\u7528 select_dtypes<\/code> \u65b9\u6cd5\u7b5b\u9009\u51fa\u6240\u6709\u6570\u503c\u5217\u3002Pandas \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u5904\u7406\u51fd\u6570\uff0c\u9002\u5408\u7528\u4e8e\u5904\u7406\u590d\u6742\u7684\u8868\u683c\u6570\u636e\u3002<\/p>\n<\/p>\n
\u5341\u3001\u5904\u7406\u5d4c\u5957\u5217\u8868\u4e2d\u7684\u6574\u6570<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u5d4c\u5957\u5217\u8868\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u4ece\u5d4c\u5957\u7ed3\u6784\u4e2d\u63d0\u53d6\u6574\u6570\u3002<\/p>\n<\/p>\n
def extract_nested_integers(nested_list):<\/p>\n
    integers = []<\/p>\n
    for item in nested_list:<\/p>\n
        if isinstance(item, int):<\/p>\n
            integers.append(item)<\/p>\n
        elif isinstance(item, list):<\/p>\n
            integers.extend(extract_nested_integers(item))<\/p>\n
    return integers<\/p>\n
my_nested_list = [1, [2, [3, 4], 5], 6, [7, 8]]<\/p>\n
all_integers = extract_nested_integers(my_nested_list)<\/p>\n
print(all_integers)  # \u8f93\u51fa\uff1a[1, 2, 3, 4, 5, 6, 7, 8]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a extract_nested_integers<\/code> \u51fd\u6570\uff0c\u7528\u4e8e\u9012\u5f52\u904d\u5386\u5d4c\u5957\u5217\u8868\uff0c\u5e76\u63d0\u53d6\u5176\u4e2d\u7684\u6574\u6570\u3002\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u5143\u7d20\uff0c\u5982\u679c\u662f\u6574\u6570\u7c7b\u578b\uff0c\u5219\u6dfb\u52a0\u5230\u7ed3\u679c\u5217\u8868\u4e2d\uff1b\u5982\u679c\u662f\u5217\u8868\u7c7b\u578b\uff0c\u5219\u9012\u5f52\u8c03\u7528\u51fd\u6570\u81ea\u8eab\uff0c\u63d0\u53d6\u5176\u4e2d\u7684\u6574\u6570\u3002\u6700\u7ec8\u8fd4\u56de\u5305\u542b\u6240\u6709\u6574\u6570\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u5341\u4e00\u3001\u4f7f\u7528\u751f\u6210\u5668\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e<\/h3>\n<\/p>\n
\u5f53\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\uff0c\u751f\u6210\u5668\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u5904\u7406\u65b9\u5f0f\u3002\u751f\u6210\u5668\u53ef\u4ee5\u9010\u6b65\u751f\u6210\u6570\u636e\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u5c06\u6240\u6709\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n<\/p>\n
def integer_generator(data_list):<\/p>\n
    for item in data_list:<\/p>\n
        if isinstance(item, int):<\/p>\n
            yield item<\/p>\n
        elif isinstance(item, str) and item.isdigit():<\/p>\n
            yield int(item)<\/p>\n
large_list = [str(i) for i in range(1000000)] + [i for i in range(1000000)]<\/p>\n
integers = integer_generator(large_list)<\/p>\n
for integer in integers:<\/p>\n
    print(integer)  # \u8f93\u51fa\uff1a0, 1, 2, ..., 999999<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a integer_generator<\/code> \u751f\u6210\u5668\u51fd\u6570\uff0c\u7528\u4e8e\u4ece\u5217\u8868\u4e2d\u9010\u6b65\u751f\u6210\u6574\u6570\u3002\u751f\u6210\u5668\u51fd\u6570\u4f7f\u7528 yield<\/code> \u5173\u952e\u5b57\u9010\u6b65\u8fd4\u56de\u6570\u636e\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u8fd4\u56de\u6574\u4e2a\u5217\u8868\u3002\u8fd9\u6837\u53ef\u4ee5\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\u8282\u7701\u5185\u5b58\u3002<\/p>\n<\/p>\n
\u5341\u4e8c\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u4ecePython\u5217\u8868\u4e2d\u8fd4\u56de\u6574\u6570\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u7d22\u5f15\u3001\u5207\u7247\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001filter\u51fd\u6570\u3001map\u51fd\u6570\u7ed3\u5408filter\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u7ed3\u5408\u591a\u79cd\u65b9\u6cd5\u5904\u7406\u590d\u6742\u5217\u8868\u3001\u4f7f\u7528NumPy\u5904\u7406\u6570\u5b57\u5217\u8868\u3001\u4f7f\u7528Pandas\u5904\u7406\u6570\u636e\u6846\u4e2d\u7684\u6574\u6570\u3001\u5904\u7406\u5d4c\u5957\u5217\u8868\u4e2d\u7684\u6574\u6570\u4ee5\u53ca\u4f7f\u7528\u751f\u6210\u5668\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u7b49\u3002\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u6570\u636e\u7c7b\u578b\u3002\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u6574\u6570\u6570\u636e\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u4ecePython\u5217\u8868\u4e2d\u63d0\u53d6\u6574\u6570\uff1f<\/strong>
\u8981\u4ece\u4e00\u4e2a\u5305\u542b\u591a\u79cd\u6570\u636e\u7c7b\u578b\u7684Python\u5217\u8868\u4e2d\u63d0\u53d6\u6574\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3002\u901a\u8fc7\u68c0\u67e5\u6bcf\u4e2a\u5143\u7d20\u7684\u7c7b\u578b\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u4ec5\u5305\u542b\u6574\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n
original_list = [1, 'a', 3.14, 2, 'hello', 5]\nintegers_only = [item for item in original_list if isinstance(item, int)]\nprint(integers_only)  # \u8f93\u51fa: [1, 2, 5]\n<\/code><\/pre>\n
\u5982\u679c\u5217\u8868\u4e2d\u6ca1\u6709\u6574\u6570\uff0c\u5982\u4f55\u5904\u7406\uff1f<\/strong>
\u5728\u5904\u7406\u5217\u8868\u65f6\uff0c\u5982\u679c\u60a8\u5e0c\u671b\u786e\u4fdd\u8fd4\u56de\u503c\u4e2d\u81f3\u5c11\u6709\u4e00\u4e2a\u6574\u6570\uff0c\u53ef\u4ee5\u5728\u63d0\u53d6\u6574\u6570\u540e\u68c0\u67e5\u65b0\u7684\u5217\u8868\u3002\u5982\u679c\u65b0\u5217\u8868\u4e3a\u7a7a\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u8fd4\u56de\u4e00\u4e2a\u9ed8\u8ba4\u503c\uff0c\u4f8b\u59820\u6216None\uff1a<\/p>\n
if integers_only:\n    print(integers_only)\nelse:\n    print(0)  # \u8f93\u51fa\u9ed8\u8ba4\u503c\n<\/code><\/pre>\n
\u53ef\u4ee5\u5728Python\u5217\u8868\u4e2d\u5b58\u50a8\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u5b57\u5417\uff1f<\/strong>
\u786e\u5b9e\u53ef\u4ee5\uff0cPython\u5217\u8868\u53ef\u4ee5\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u5b57\uff0c\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u590d\u6570\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u76f8\u4f3c\u7684\u65b9\u6cd5\u63d0\u53d6\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u5b57\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u63d0\u53d6\u6240\u6709\u6570\u5b57\uff08\u5305\u62ec\u6d6e\u70b9\u6570\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528isinstance()<\/code>\u68c0\u67e5\u662f\u5426\u4e3a(int, float)<\/code>\u7c7b\u578b\uff1a<\/p>\n
numbers_only = [item for item in original_list if isinstance(item, (int, float))]\nprint(numbers_only)  # \u8f93\u51fa: [1, 3.14, 2, 5]\n<\/code><\/pre>\n
\u8fd9\u6837\uff0c\u60a8\u4e0d\u4ec5\u53ef\u4ee5\u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u6574\u6570\uff0c\u8fd8\u53ef\u4ee5\u9009\u62e9\u6027\u5730\u63d0\u53d6\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u5b57\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4ece\u5217\u8868\u4e2d\u8fd4\u56de\u6574\u6570\u3002\u4f7f\u7528\u7d22\u5f15\u3001\u4f7f\u7528\u5207\u7247\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3001\u4f7f\u7528filter\u51fd\u6570\u7b49\u662f […]","protected":false},"author":3,"featured_media":1155949,"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\/1155944"}],"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=1155944"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1155944\/revisions"}],"predecessor-version":[{"id":1155950,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1155944\/revisions\/1155950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1155949"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1155944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1155944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1155944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}