大约有 11,000 项符合查询结果(耗时:0.0290秒) [XML]

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Check if an apt-get package is installed and then install it if it's not on Linux

..." echo $? sudo apt remove -y "$pkg" dpkg -s "$pkg" echo $? ls -l /usr/lib/python3/dist-packages/certbot/reporter.py sudo apt remove --purge certbot dpkg -s "$pkg" echo $? ls -l /usr/lib/python3/dist-packages/certbot/reporter.py then: the first two echo $? output 0, only the third one outputs 1...
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Any way to properly pretty-print ordered dictionaries?

I like the pprint module in Python. I use it a lot for testing and debugging. I frequently use the width option to make sure the output fits nicely within my terminal window. ...
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What does enumerate() mean?

What does for row_number, row in enumerate(cursor): do in Python? 5 Answers 5 ...
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Check if a Python list item contains a string inside another string

...bc-456']) The test for iterable may not be the best. Got it from here: In Python, how do I determine if an object is iterable? share | improve this answer | follow ...
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Parsing boolean values with argparse

... nargs='?' means zero or one argument. docs.python.org/3/library/argparse.html#nargs – Maxim Aug 3 '17 at 12:05 1 ...
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老人炒股亏了本一怒打隔壁老王 因他穿绿衬衫 - 轻松一刻 - 清泛网 - 专注C/...

...平日里关系十分要好。两人边下棋边闲聊,聊着聊着就说了股票,老王好心地劝道:“老徐啊,我儿子最近炒股也亏了不少,听说还要跌,你也别买了。” 徐大爷气得把棋盘都推翻了,盛怒之余,他还发现老王穿了一件绿色...
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不穿绿衣服!盘点股民的五个奇葩迷信行为 - 轻松一刻 - 清泛网 - 专注C/C++...

...德的理财师认为,虽然迷信,但无伤大雅。那么,股民们底有哪些有趣的奇葩迷信行为呢?让我们一起来做个盘点! 1、“牛骑熊”雕塑上香 近日,因为股市低迷,福建省厦门市心和美术园门口出现一尊巨大的“牛骑...
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坑!网友贪便宜买低价大虾,撕开包装那一刻他哭了 - 轻松一刻 - 清泛网 - 专...

...友在Twitter上分享了一则感人故事…他表示自己在超市看了一盒9只装的原产大虾,看上去还蛮大的...主要是价格超低!他觉得...最近,有日本网友在Twitter上分享了一则感人故事…他表示自己在超市看了一盒9只装的原产大虾...
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世界上最经典的25句话 [转] - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

...或者坏人            11、鱼对水说你看不我的眼泪,因为我在水里.水说我能感觉你的眼泪,因为你在我心里            12、快乐要有悲伤作陪,雨过应该就有天晴。如果雨后还是雨,如果忧伤...
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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升

...正确的使用它。写在前面:大家面试的时候可能会经常遇考察浮点数与零比较的问题,是简单的 f == 0 吗?当然不是,正确的写法应该是f > -1e-7 && f < 1e-7,为什么呢? 浮点型,由于精度关系(float精度:2^23 = 8388608,一共7位,...