Category：Python
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Time：2019-10-24
Import selectorsimport socketimport OS,timeBASE_DIR = os.path.dirname(os.path.abspath(s)) “” Conclusion: read () should not write dead time, to listen to the read () by dic segmentation, condition, to determine selection code execution logic, “‘ class selectFtpServer: # sel = selectors. DefaultSelector () def __init__ (self) : Self. Ip_port = (‘ 127.0.0.1, 8885) the self. The sel […]
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Time：2019-10-24
PyQt5 installation Enter PIP install PyQt5 under CMD to complete PyQt5 installation, When the installation is complete, you can see it in the python installation directory Configuration PyCharm PyCharm is configured to open qt designer in PyCharm and generate qt files, which are then converted into python language software files. Open Pycharm and proceed as […]
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Time：2019-10-23
__init__, class Dog(object): def __init__(self): Print (‘ the init method ‘) def __del__(self): Print (‘ del method ‘) def __str__(self): Print (‘ STR method ‘) def __new__(cls, *args, **kwargs): Print (‘ new method ‘) return object.__new__(cls) xtq=Dog() ”’ Three things to do: 1. Call the arbitration method to create the object, and then find a […]
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Time：2019-10-23
This paper shares netease 2016 r & d engineer programming questions for your reference, the specific content is as follows ”’ Scholarship for programming Time limit: 1 second Space limit: 32768K Little v has n courses this year, and every course has exams. In order to get the scholarship, little v must make his average […]
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Time：2019-10-21
Original question | Adding Actions to a PEG Grammar author|Guido van Rossum (father of Python) Translator|Pea cat statement|This translation is for the purpose of communication and learning, based on CC by-nc-sa 4.0 license agreement. For the convenience of reading, the content is slightly changed. If you can add (some) semantics to the grammar rules, the […]
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Time：2019-10-21
As we all know, after creating the interface. UI file through PyQt4 designer tool, you need to manually CMD the command to convert the. UI file to. Py before you can write the event. If you encounter many. UI files to be converted one by one, it will be very difficult. Based on the belief […]
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Time：2019-10-20
Project environment construction I. create Django project 1. Create a python virtual environment Create a python virtual environment on the virtual machine, because the actual project deployment, the real Linux mkvirtualenv -p /usr/bin/python3.6 tzproject 2. Create Django project 1. Install Django Choose to install the latest version 2.1.10 of Django 2.1. X pip install django==2.1.10 […]
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Time：2019-10-20
The example of this article shares Netease Youdao 2017 internal programming problem: shuffle, for your reference. The specific content is as follows ”’ [programming question] shuffleTime limit: 1 secondSpace limit: 32768kShuffling is very common in our life. Now we need to write a program to simulate the process of shuffling. Now we need to shuffle […]
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Time：2019-10-19
1, figures 1. Boolean (bool) Type bool has only two values: true and false a = False b = True 2. Shaping Int type n = 12 a = “12” Convert string type to int method: int (a) default to decimal Decimal system in type ‚ int can also be converted […]
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Time：2019-10-19
Generally, the following two packages need to be imported from PyQt5.QtWidgets import QApplication import sys And add the following code to the. Py file: if __name__ == “__main__”: app = QtWidgets.QApplication(sys.argv) widget = QtWidgets.QWidget() ui = Ui_MainWindow() ui.setupUi(widget) widget.show() sys.exit(app.exec_()) The individual codes above are explained below widget = QtWidgets.QWidget() Because the default object class […]
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Time：2019-10-18
It is not difficult to climb the barrage of station B. To get all the video barrages of the up main, we first enter the up main video page, which is https://space.bilibilili.com/id/video. Press F12 to open the developer menu. Refresh it. There is a getsubmitvideo file in the XHR file of the network. This file […]
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Time：2019-10-18
The example of this paper describes the operation of reading and writing excel file by python. To share with you for your reference, as follows: For the operation of Excel files, python has the third-party toolkit support, xlutils. In this toolkit, xlrd, xlwt and other toolkits are included. With these tools, Excel can be operated […]
