最近在使用Python的时候发现有异常,异常内容为python-eggs is writable ……,详细异常如下: /usr/local/lib/python2.7/site-packages/setuptools -24.0.2-py2.7.egg/pkg_resources/__init__.py:1268: UserWarning: /home/hduser06/.python-eggs is writable 最后探讨问题,发现是由于权限问题导致,解决办法: cd /home/hduser06/ chmod g-wx,o-wx .python-eggs/
trying to extract file(s) to the Python egg cache: [Errno 13] Permission denied: '/root/.python-eggs ' The Python egg cache directory is currently set to: /root/.python-eggs 解决办法:让开发在代码中声明一下环境变量。
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Penguin's Eggs支持如下: arm64 armel i386 amd64 penguins-eggs 是一个控制台实用程序,正在积极开发中,它允许重新管理系统并将其重新分发为 iso 映像或通过 penguins-eggs,目前2021可能是一个成熟的工具,非常有用,可以轻松创建您的个人定制iso或组织/学校版本的Linux并将其部署在局域网上,将其作为USB密钥送给朋友或在互联网上发布鸡蛋! 试试 penguins-eggs 是的,它是一个控制台实用程序 - 没有 GUI - 但不要害怕, penguins-eggs 是一个控制台命令 - 真的很简单 - 如果你能够打开一个终端,你可以使用它 Eggs 将在 armel 和 arm64 架构上运行,但我们需要为此构建生成一个新的 UEFI 部分。 Screenshot from 2021-06-10 11-06-44.png
print("Arguments:", ham, eggs) ... >>> f('wonderful') Annotations: {'eggs': <class 'int'>, 'return': __annotations__) 3 print('Arguments:', ham, eggs) 4 5 f('wonderful') 运行效果: Python 3.3.2 (v3.3.2: 总结: def f(ham: 42, eggs: int = 'spam') -> "Nothing to see here": print("Annotations:", f. __annotations__) print("Arguments:", ham, eggs) #def关键字定义了函数f,在函数f中有两个参数:ham,eggs。 #其中ham没有默认值,而eggs是由默认值的,其默认值为'spam'.
) pprint.PrettyPrinter(indent=4,width=20,compact=True,depth=2) import pprint stuff = ['spam', 'eggs '] stuff.insert(0, stuff[:]) pp = pprint.PrettyPrinter(indent=4) pp.pprint(stuff) [ ['spam', 'eggs (width=41, compact=True) pp.pprint(stuff) [['spam', 'eggs', 'lumberjack', 'knights', 'ni'], 'spam ', 'eggs', 'lumberjack', 'knights', 'ni'] tup = ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('parrot', ('fresh fruit',)))))))) pp = pprint.PrettyPrinter(depth=6) pp.pprint(tup) ('spam', ('eggs
Coffee cup = PourCoffee(); Console.WriteLine("coffee is ready"); Egg eggs = FryEggs(2); Console.WriteLine("eggs are ready"); Bacon bacon = FryBacon(3 Console.WriteLine("Put eggs on plate"); return new Egg(); } private static = await FryEggsAsync(2); Console.WriteLine("eggs are ready"); Bacon bacon = 而对于直接 Egg eggs = await FryEggsAsync(2); 的方式,适用于你只需要等待这一个异步操作结果,不需要进行其他操作的时候。
'C:\\') >>> shutil.copy('C:\\spam.txt', 'C:\\delicious') 'C:\\delicious\\spam.txt' >>> shutil.copy('eggs.txt ', 'C:\\delicious\\eggs2.txt') 'C:\\delicious\\eggs2.txt' 2、shutil.move()方法可以改文件名 >>> import shutil >>> shutil.move('C:\\bacon.txt', 'C:\\eggs') 'C:\\eggs\\bacon.txt' >>> shutil.move('C:\\bacon.txt', ' C:\\eggs\\new_bacon.txt') 'C:\\eggs\\new_bacon.txt' 3、shutil模块可以删除一个文件夹及其所有的内容。
>>> print_stuff('foo') foo >>> print_stuff(123) 123 >>> print_stuff(['spam', 'eggs', 'steak']) spam eggs pass ... >>> items = MyList(['spam', 'eggs', 'steak']) >>> items ['spam', 'eggs', 'steak'] >>> print_stuff (items) ['spam', 'eggs', 'steak'] 当然,items 仍然是一个列表,但是 print_stuff 函数不再识别它了。 pass ... >>> items = ['spam', 'eggs', 'steak'] >>> type(items) is list True >>> isinstance(items, list ', 'steak') >>> print_stuff(items) ('spam', 'eggs', 'steak') 如果传入的实参不是列表,则不能输出实参对象类型。
= ['鸡蛋', '鹅蛋', '鸭蛋', '鹌鹑蛋'] >>> eggs[0:4:2] ['鸡蛋', '鸭蛋'] View Code 2.2.4:通过切片实现列表元素变更位置 >>> eggs = ['鸡蛋','鸭蛋','鹅蛋','鹌鹑蛋'] >>> eggs[1] = '鹅蛋' >>> eggs[2] = '鸭蛋' >>> eggs ['鸡蛋', '鹅蛋', '鸭蛋', '鹌鹑蛋'] View Code 2.3:删除元素 2.3.1:通过索引,删除元素 >>> eggs = ['鸡蛋', '鹅蛋', '鸭蛋', '鹌鹑蛋'] >>> del eggs[0] >>> eggs [' 鹅蛋', '鸭蛋', '鹌鹑蛋'] View Code 2.3.2:直接删除整个列表 >>> eggs = ['鸡蛋', '鹅蛋', '鸭蛋', '鹌鹑蛋'] >>> del eggs >>> : name 'eggs' is not defined View Code 2.3.3:pop()方法 >>> eggs = ['鸡蛋', '鹅蛋', '鸭蛋', '鹌鹑蛋'] >>> eggs.pop
: Node = Node("Eggs", 129) milk: Node = Node("Milk", 55) cabbage: Node = Node("Cabbage", 159) , 129) (Eggs, 129) parent: (Butter, 76) left: (Cabbage, 159) right: None (Cabbage, 159) parent: (Eggs : Node = Node("Eggs", 129) milk: Node = Node("Milk", 55) cabbage: Node = Node("Cabbage", 159) eggs.left = cabbage milk.right = pork return flour root = setup_treap_remove() treap = , 129) (Eggs, 129) parent: (Beet, 81) left: (Cabbage, 159) right: None (Cabbage, 159) parent: (Eggs,
>>> print('{0} and {1}'.format('spam', 'eggs')) spam and eggs >>> print('{1} and {0}'.format('spam', 'eggs')) eggs and spam 以上就是python format的格式化操作,希望对大家有所帮助。
>>> import pprint >>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni'] >>> stuff.insert(0, stuff [:]) >>> pp = pprint.PrettyPrinter() #采用默认值 >>> pp.pprint(stuff) [['spam', 'eggs', 'lumberjack', 'knights ', 'ni'], 'spam', 'eggs', 'lumberjack', 'knights', 'ni'] >>> pp = pprint.PrettyPrinter(indent=4 ) #缩进为4 >>> pp.pprint(stuff) [ ['spam', 'eggs', 'lumberjack', 'knights', 'ni'], 'spam', 'eggs', 'lumberjack', 'knights', 'ni'] >>> tup = ('spam', ('eggs', ('lumberjack', ('knights
def func(): global eggs eggs = 'spam' eggs = 42 func() print(eggs) ----------------------- spam ----------------------- def func(): #global eggs eggs = 'spam' eggs = 42 func() print(eggs >>> items = {'apples': 5, 'caps': 2} >>> items.get('eggs', 0) >>> 0 10.运行pip install,报错 Could not find
以下示例具有位置参数,关键字参数和注释的返回值: def f(ham: str, eggs: str = 'eggs') -> str: print("Annotations:", f. __annotations__) print("Arguments:", ham, eggs) return ham + ' and ' + eggs f('spam') # Annotations : {'ham': <class 'str'>, 'eggs': <class 'str'>, 'return': <class 'str'>} # Arguments: spam eggs 我们可以发现 -> 主要是标记返回值数据类型; 拿上面例子来说,在函数f中,标记参数ham为str类型,eggs为str类型;return的值为->后面标记的类型str。
正确地做法应该是: spam = 'I have a pet cat.' spam = spam[:13] + 'r' + spam[14:] print(spam) 6、字符串与非字符串连接 num_eggs = 12 print('I have ' + num_eggs + ' eggs.') 导致:TypeError: cannot concatenate ‘str’ and ‘int’ objects 字符串与非字符串连接时,必须把非字符串对象强制转换为字符串类型 num_eggs = 12 print('I have ' + str(num_eggs) + ' eggs.') 或者使用字符串的格式化形式 num_eggs = 12 print('I have %s eggs.' % (num_eggs)) 7、使用错误的索引位置 spam = ['cat', 'dog', '
4月21日,网络安全公司eSentire在其官方博客中表示,名为“more_eggs”(更多蛋) 的恶意软件正潜藏至求职简历中,如果企业招聘官打开简历中的附件,恶意软件将自动安装,将恶意代码传递给合法的 到目前,eSentire已监测到 4起由more_eggs引发的安全事件,其中3起发生在3月底,受到攻击的企业组织包括一家总部位于美国的航空航天国防公司、一家大型英国注册会计师事务所、一家总部位于加拿大的国际商业律师事务所以及加拿大全国人事代理机构 由于上述4起攻击都被成功阻止,安全研究人员无法确定恶意软件的最终目标是什么,但其实在一年前,more_eggs就已活跃在LinkedIn平台,只是那时的目标与现在恰恰相反,黑客并没有冒充成求职者发送带毒简历 对于像more_eggs这样的勒索软件,如果能在航空航天、律师事务所、注册会计师事务所和企业人事代理机构的系统环境中站稳脚跟可能非常有利可图,可用来实施部署勒索软件、窃取知识产权、窃取公司银行账户凭证或进行商业电子邮件欺诈等行为 blog/hackers-spearphish-corporate-hiring-managers-with-poisoned-resumes-infecting-them-with-the-more-eggs-malware
result += '>' + other.cont[index:] print(result) spam = SpecialString('spam') eggs = SpecialString('eggs') spam > eggs # result >>> >spam>eggs e>spam>ggs eg>spam>gs egg>spam>s eggs
lines:>>> table = ,,]>>> headers = >>> print tabulate(table, headers, tablefmt=plain)item qtyspam 42eggs Pandoc Markdownextensions:>>> print tabulate(table, headers, tablefmt=simple)item qty------ -----spam 42eggs name:>>> print tabulate(table, headers, tablefmt=orgtbl)| item | qty ||--------+-------|| spam | 42 || eggs align=right| qty|-| spam || align=right| 42|-| eggs || align=right| 451|-| bacon || align=right| 0|}Column list(csv.reader(StringIO(spam, 42neggs, 451n)))>>> table, ]>>> print tabulate(table)---- ----spam 42eggs
连接数据库时异常: /usr/lib/python2.7/dist-packages/pkg_resources.py:1031: UserWarning: /home/huayuan/.python-eggs print 'MySQL Error: %d %s' % (e.arg[0], e.arg[1]) 一开始就很容易认为是权限不足,依照提示在Linux终端将/home/huayuan/.python-eggs 增加读写权限: chmod a+rw /home/huayuan/.python-eggs 结果问题依旧,后来经过反复搜索,终于找到答案,原来不是要增加权限,而是要减掉一些权限,最终有效答案如下: chmod g-wx, o-wx /home/huayuan/.python-eggs
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