What is pythontemp

Jun 21, 2019 pm 04:47 PM
python temp

The tempfile module is specifically designed to create temporary files and temporary directories, and it works well on both UNIX and Windows platforms.
The tempfile module provides many commonly used functions. Let me introduce these functions in detail below.

What is pythontemp

tempfile.TemporaryFile(mode='w b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None) : Create a temporary file. This function returns a file-like object, that is, supports file I/O.

tempfile.NamedTemporaryFile(mode='w b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, delete=True): Create a temporary file. This function does much the same thing as the previous function, except that the temporary file it generates has a filename in the file system.

Related recommendations: "Python Video Tutorial"

tempfile.SpooledTemporaryFile(max_size=0, mode='w b', buffering=None, encoding=None, newline =None, suffix=None, prefix=None, dir=None): Create a temporary file. Compared with the TemporaryFile function, when the program outputs data to the temporary file, it will be output to the memory first, and will not be actually output to the physical disk until max_size is exceeded.

tempfile.TemporaryDirectory(suffix=None, prefix=None, dir=None): Generate a temporary directory.

tempfile.gettempdir(): Get the system’s temporary directory.

tempfile.gettempdirb(): Same as gettempdir(), except that this function returns a bytestring.

tempfile.gettempprefix(): Returns the prefix used to generate temporary files.

tempfile.gettempprefixb(): Same as gettempprefix(), except that this function returns a bytestring.

The tempfile module also provides two low-level functions, tempfile.mkstemp() and tempfile.mkdtemp(). The four functions introduced above for creating temporary files and temporary directories are all high-level functions. The high-level functions support automatic cleaning and can be used with the with statement, while these two low-level functions do not. Therefore, it is generally recommended to use high-level functions to create temporary files and temporary directories.

In addition, the tempfile module also provides the tempfile.tempdir attribute, and the system's temporary directory can be changed by assigning a value to this attribute.

The following program demonstrates how to use temporary files and temporary directories:

import tempfile
# 创建临时文件
fp = tempfile.TemporaryFile()
print(fp.name)
fp.write('两情若是久长时,'.encode('utf-8'))
fp.write('又岂在朝朝暮暮。'.encode('utf-8'))
# 将文件指针移到开始处,准备读取文件
fp.seek(0)
print(fp.read().decode('utf-8')) # 输出刚才写入的内容
# 关闭文件,该文件将会被自动删除
fp.close()
# 通过with语句创建临时文件,with会自动关闭临时文件
with tempfile.TemporaryFile() as fp:
    # 写入内容
    fp.write(b'I Love Python!')
    # 将文件指针移到开始处,准备读取文件
    fp.seek(0)
    # 读取文件内容
    print(fp.read()) # b'I Love Python!'
# 通过with语句创建临时目录
with tempfile.TemporaryDirectory() as tmpdirname:
    print('创建临时目录', tmpdirname)
Copy after login

The above program creates temporary files in two ways:

First The first way is to manually create a temporary file. After reading and writing the temporary file, you need to actively close it. When the program closes the temporary file, the file will be automatically deleted.

The second way is to use the with statement to create a temporary file, so that the with statement will automatically close the temporary file.

The above program also creates a temporary directory at the end. Because the program uses the with statement to manage the temporary directory, the program automatically deletes the temporary directory as well.

Run the above program and you can see the following output:

C:\Users\admin\AppData\Local\Temp\tmphvehw9z1
两情若是久长时,又岂在朝朝暮暮。
b'I Love Python!'
创建临时目录C:\Users\admin\AppData\Local\Temp\tmp3sjbnwob
Copy after login

The first line of output above is the file name of the temporary file generated by the program, and the last line of output is the name of the temporary file generated by the program. The directory name of the temporary directory. It should be noted that do not look for temporary files or temporary folders, because the temporary files and temporary folders will be deleted when the program exits.

The above is the detailed content of What is pythontemp. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

Python vs. JavaScript: Community, Libraries, and Resources Python vs. JavaScript: Community, Libraries, and Resources Apr 15, 2025 am 12:16 AM

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

Detailed explanation of docker principle Detailed explanation of docker principle Apr 14, 2025 pm 11:57 PM

Docker uses Linux kernel features to provide an efficient and isolated application running environment. Its working principle is as follows: 1. The mirror is used as a read-only template, which contains everything you need to run the application; 2. The Union File System (UnionFS) stacks multiple file systems, only storing the differences, saving space and speeding up; 3. The daemon manages the mirrors and containers, and the client uses them for interaction; 4. Namespaces and cgroups implement container isolation and resource limitations; 5. Multiple network modes support container interconnection. Only by understanding these core concepts can you better utilize Docker.

Python: Automation, Scripting, and Task Management Python: Automation, Scripting, and Task Management Apr 16, 2025 am 12:14 AM

Python excels in automation, scripting, and task management. 1) Automation: File backup is realized through standard libraries such as os and shutil. 2) Script writing: Use the psutil library to monitor system resources. 3) Task management: Use the schedule library to schedule tasks. Python's ease of use and rich library support makes it the preferred tool in these areas.

How to run programs in terminal vscode How to run programs in terminal vscode Apr 15, 2025 pm 06:42 PM

In VS Code, you can run the program in the terminal through the following steps: Prepare the code and open the integrated terminal to ensure that the code directory is consistent with the terminal working directory. Select the run command according to the programming language (such as Python's python your_file_name.py) to check whether it runs successfully and resolve errors. Use the debugger to improve debugging efficiency.

What is vscode What is vscode for? What is vscode What is vscode for? Apr 15, 2025 pm 06:45 PM

VS Code is the full name Visual Studio Code, which is a free and open source cross-platform code editor and development environment developed by Microsoft. It supports a wide range of programming languages ​​and provides syntax highlighting, code automatic completion, code snippets and smart prompts to improve development efficiency. Through a rich extension ecosystem, users can add extensions to specific needs and languages, such as debuggers, code formatting tools, and Git integrations. VS Code also includes an intuitive debugger that helps quickly find and resolve bugs in your code.

Can visual studio code be used in python Can visual studio code be used in python Apr 15, 2025 pm 08:18 PM

VS Code can be used to write Python and provides many features that make it an ideal tool for developing Python applications. It allows users to: install Python extensions to get functions such as code completion, syntax highlighting, and debugging. Use the debugger to track code step by step, find and fix errors. Integrate Git for version control. Use code formatting tools to maintain code consistency. Use the Linting tool to spot potential problems ahead of time.

Is the vscode extension malicious? Is the vscode extension malicious? Apr 15, 2025 pm 07:57 PM

VS Code extensions pose malicious risks, such as hiding malicious code, exploiting vulnerabilities, and masturbating as legitimate extensions. Methods to identify malicious extensions include: checking publishers, reading comments, checking code, and installing with caution. Security measures also include: security awareness, good habits, regular updates and antivirus software.

See all articles