lst = ['hello','world',98,'hello'] print(lst.index('hello'))#如果列表中有多个相同的元素,只返回列表中相同元素的第一个元素的索引 print(lst.index('Python')) #在指定范围内查找元素的索引 print(lst.index('hello',1,3)) #ValueError: 'hello' is not in list print(lst.index('hello',1,...
复制Python 解释器的设置路径 """ifsys.platform.startswith('win'):# 在 Windows 上复制设置路径new_path=sys.path[:]elifsys.platform.startswith('darwin')orsys.platform.startswith('linux'):# 在 MacOS 或 Linux 上复制设置路径new_path=list(sys.path)else:print("不支持的操作系统")return# 打印复制...
三、os下的path模块 fromosimportpath#print(path.abspath("AA1/a"))#返回绝对路径print(path.split("a/b/c"))#将路径拆分为路径和文件名称print(path.dirname(__file__))#获取文件中的上一级print(path.basename(__file__))#获取最后一级的名称print(path.exists(r"D:\oldboy\atmshop\DB.txt"))#...
Run Python programs in Linux Now that we’ve got the development environment setup properly, we can test it by writing some simple python code. I use vim to write code, so that’s where you’ll see me start this next bit of Python3 code, then run it. Keep in mind that django isn...
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) 简单解释一下:os importosprint("你目前使用的工作平台是:{}".format(os.name))#结果:你目前使用的工作平台是:nt---表示windows系统 prosix---表示linux系统print("当前的python工作的目录是:{}".format(os.getcwd()))#结果...
export PATH=/{lumerical_install_path}/bin:/{lumerical_install_path}/python/bin:$PATH # Ansys Optics API module install path for the current release export PYTHONPATH=/{lumerical_install_path}/api/python:$PYTHONPATH See also Create or modify environment variables in Windows...
PYTHONPATH It has a role similar to PATH. This variable tells the Python interpreter where to locate the module files imported into a program. It should include the Python source library directory and the directories containing Python source code. PYTHONPATH is sometimes preset by the Python insta...
On macOS/Linux: source env_name/bin/activate Deactivate the Virtual Environment: Simply run the command deactivate. Step 4: Managing Packages with pip pip is the package installer for Python. It allows you to install and manage additional libraries and dependencies that are not included in the ...
There is a big error (two of them) in 8.2. It should read: Add the following line at the end: export PATH=${PATH}:/home/user/android-sdk-linux_x86/tools NOTE that in the original instructions, the path is ~/home/user (which translates to /home/user/home/user, which of course do...
maven的setting文件配置 你可以前往用户家目录,在家目录中创建一个.m2目录,将setting.xml复制一份过来进行修改(推荐如果这样配置则你的配置只会影响到指定用户) 1.配置本地库的位置 2.配置阿里镜像 3.环境变量配置 path里配置%MAVEN_HOME%\bin cmd mvn -v 查看maven版本... ...