Python Study Notes (10) Python set (1), python Study Notes
Review
Int/float/str/list/tuple/dict
Integer and floating-point types are unchangeable, not sequences.
The string is immutable and is a sequence.
The list is variable and is a sequence.
Tuples are immutable and are sequences.
The dictionary is variable, but not a sequence.
Basic concepts of a set
A set i
Python learning notes (6) Python first program, learning notes python
Python statements
Assignment Statement
1. Assign the value of object 3 to variable.
2. assign values 3 and 4 to variables a and B.
1 >>> a = 3 2 >>> a ,b = 3,43 >>> a4 35 >>> b6 47 >>> a = 3,48 >>> a9 (3, 4)
3. Implement a, B = 3, 4 for a, B =
[Python O M] Simple Python O M script and python O M scriptBackground
Recently I used the Linux subsystem on Windows 10 and found that it has a very bad character: the Linux subsystem is not in the power-on and shutdown state, and is automatically loaded every time it enters the Bash shell, after exiting, all processes in the Linux subsystem will be shut down.
Python quick tutorial and python tutorial
There is a quick python tutorial written by someone on the Internet, which is very good. It is much better than reading books. Click the link below
Http://www.douban.com/group/topic/30008503/Python Basics
Python basics 01 Hello Wor
Python automated development (5): Introduction to Python, Python encoding, receiving and execution parameters, analysis of string principles, and python Encoding
Python automated development (5): Python introduction,
Hello, world
[dongsong@bogon python_study]$ cat py.cpp #include
Original official documentationHttp://docs.python.org/3/extending/embedding.html5. Embedding Python in Another Application
In the previous chapter, we discussed how to extend Python, that is, to extend Python functions by connecting to the C function library. There is also a way to do this: enrich
browsing aggregation data (aggregated). 5. kartograph.py: Lightweight python framework to create vector maps Kartograph is a Python library that is used to generate SVG maps for ESRI. kartograph.py is still in beta, and you can test it in the VIRTUALENV environment. 6. Pulsar:python Event-driven concurrency framework Pulsar is an event-driven concurrency frame
Python Study Notes-Day1-Python basics, python-day1-python1. Translation of advanced languages into machine languages: Interpretation and compilation
Python is an interpreted language.
1.1 syntax common three error types
Syntax error (syntax errors)Running error (runtime errors)Semantic Error (semantic errors)
1.3 vari
Python beginners and advanced notes: Python built-in function summary, python advanced
Built-in functionsCommon functions
1. Mathematical Correlation• Abs (x)Abs () returns the absolute value of a number. If a plural number is given, the return value is the modulo of the plural number.
Copy codeThe Code is as follows:>>> Print abs (-100)100>>> Print abs (1 + 2j)2
Python development [initial]: Install Python 3 and Python 3 in Linux
By default, the Linux system comes with python, Which is depended on by many programs in the system. Therefore, it is recommended that you do not delete it easily unless you can solve the dependency problem of other programs. If you use the latest Py
Python installation of mysql-python error prompt: python setup. py egg_info, setup. pyegginfo
For a python project, mysql is required. Generally, python-mysql is used. The following error occurs during installation:
Command "python
1.1 Python OS. Path Module
OS. Path. abspath (PATH) # returns the absolute path.OS. Path. basename (PATH) # returns the file name OS. Path. commonprefix (list) # returns the longest path of all paths in List (multiple paths. OS. path. dirname (PATH) # returns the file path OS. path. exists (PATH) # True is returned if the path exists, and falseos is returned if the path is damaged. path. lexists # If the path exists, true is returned. If the path is
: Lightweight python OLAP frameworkCubes is a lightweight Python framework that includes tools such as OLAP, multidimensional data analysis, and browse aggregated data (aggregated).kartograph.py: Lightweight python framework for creating vector mapsKartograph is a Python library that is used to generate SVG maps for
lightweight Python framework that includes tools such as OLAP, multidimensional data analysis, and browse aggregated data (aggregated).kartograph.py: Lightweight python framework for creating vector mapsKartograph is a Python library that is used to generate SVG maps for ESRI. kartograph.py is still in beta, and you c
Python Syntax: python-Bubble sorting and python syntax
After that, I said that I needed to collect data on the beauty human body art station. I used python to collect and learn python syntax knowledge. Now I want to share the python
Python learning day3 -- python basics, pythonday3 -- python
1. python does not need to declare the type of the variable. python judges it at runtime.
2. Try not to splice strings with "+". during runtime, a memory space will be opened up for each "+", and the string will be
Python learning-Basic Python data types (1), python learning Data Types
Python3 Basic Data Type Variables in Python3 do not need to be declared. Each variable must be assigned a value before it can be used.Python3 has six standard data types: Number, String, list, Tuple, Dictionary (Dict), and set) Number (Number ): Python3 supports int, float, bool, and compl
How Python code is organized:. py fileModule file Style:#!/usr/bin/python#-*-coding:utf8-*-"""@author: Yugengde@contact: [Email protected]@file: ${name}.py@time: ${date} ${time}"""def fun ():PassClass A (object):Passif __name__ = = ' __main__ ':Pass2. The role of __name__How Python modules are executedPython ***.pyImport * * *Main module, non-master module__name_
the difference between Python 2 and Python 3
recently began to learn Python, the process of continuous learning to the difference between the two, in order to facilitate the review, so write here, the content will be constantly updated
1, Encoding: Python2 's default encoding is ASCII, so the default is not supported in Chinese, if you want its support must ad
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