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ImportError: No module named 'custom function' Phenomenon: Use the command line to run a file in the package, and an error similar to the following will appear $ python tests/test_utils.pyTraceback (most recent call last): File "tests/test_utils.py", line 7, in <module> from run_api import appImportError: No module named 'run_api' Solution: Add the program root directory to the variablePYTHONPATH # 进入到程序根目录$ export PYTHONPATH=.# windows 环境执行：set PYTHONPATH=.# 然后执行相关命令$ python tests/test_utils.py Transcoding is abnormal in some cases in Windows environment...

python data type mind map edit #int-整数num1 = 1# float-浮点数num2 = 1.1# str-字符串 #字符串是不可变的数据类型num3 = '1'# set-集合num4 = {'a',1}# list-列表num5 = ['a',1]# bool-布尔型num6 = True# tuple-元组num7 = (10,20)# dict-字典num8 = {'name':'gg'} formatted output format age = 18name = 'Tom'weight = 75.5stu_id = 1stu_id2 = 1000print("今年我的年龄是%d岁" % age)print("我的名字是%s" % name)print("我的体重是%.2f公斤" % weight)print("我的学号是%d" % stu_id)print("我的学号是%03d" % stu_id)print("我的学号是%03d" % stu_id2)print("我的名字是%s, 今年%d岁,明年是%d岁" % (name ,age,age+1) )print("我的名字是%s, 今年%d岁,明年是%d岁,体重%.2f公斤,学号是%d" % (name ,age,age+1,weight,stu_id)) Note: In addition to %s, the format string can also be written as f'{expression}' - efficient, new formatting method in python3....

Please click on the secular media above to follow me Excel is a spreadsheet software written by a computer. An intuitive interface, excellent calculation functions and charting tools, combined with successful marketing, have made Excel the most popular data processing software for personal computers. Today, the computer learning editor has prepared 30 frequently used Exce shortcut keys for you, which are very practical. Remember to collect and forward after reading it!...

Click on the " Python Artificial Intelligence Technology " above to follow, star or stick to the top Pushed on time at 22:24, delivered as soon as possible Reply to the " big gift package " in the background and send you special benefits Editor: Lele | From: Python Artificial Intelligence Programming Pythn artificial intelligence technology (ID: coder_experience) 902th tweet Previous: Python downloads large files, which method is faster...

Source: Zhihu Surprise at the end 1. Divide by severity Definition: It refers to the degree of damage to software quality by bugs , that is, how the existence of bugs will affect the functions and performance of software. Classification: System crash, critical, general, minor, recommended. 2. By priority Definition: A measure of the current order in which software defects are addressed and fixed. Classification: high (high), middle (middle), low (low)....

Bug fix audio: progress bar 00:00 06:46 back 15 seconds double speed fast forward 15 seconds When using electronic products, we always encounter large and small bugs. Some small problems may not affect the experience, but some will make us not want to use them again after using them once. This is the case with the live broadcast platform I used a while ago. The live broadcasts failed several times in a row, and I almost lost patience with the repeated 404....

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Source | OSCHINA Community Author | PostgreSQLChina Original link: https://my.oschina.net/postgresqlchina/blog/5568852 When using PostgreSQL, we sometimes insert a large amount of data into the database, such as importing test data, importing business data, and so on. This article describes some options for optimization when importing large amounts of data. You can choose according to your own situation. 1. Turn off auto-commit Turn off autocommit and only do one commit at the end of each (data copy)....

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