Msvcrt python как установить

msvcrt — Useful routines from the MS VC++ runtime¶

These functions provide access to some useful capabilities on Windows platforms. Some higher-level modules use these functions to build the Windows implementations of their services. For example, the getpass module uses this in the implementation of the getpass() function.

Further documentation on these functions can be found in the Platform API documentation.

The module implements both the normal and wide char variants of the console I/O api. The normal API deals only with ASCII characters and is of limited use for internationalized applications. The wide char API should be used where ever possible.

Changed in version 3.3: Operations in this module now raise OSError where IOError was raised.

File Operations¶

Lock part of a file based on file descriptor fd from the C runtime. Raises OSError on failure. The locked region of the file extends from the current file position for nbytes bytes, and may continue beyond the end of the file. mode must be one of the LK_* constants listed below. Multiple regions in a file may be locked at the same time, but may not overlap. Adjacent regions are not merged; they must be unlocked individually.

Raises an auditing event msvcrt.locking with arguments fd , mode , nbytes .

msvcrt. LK_LOCK ¶ msvcrt. LK_RLCK ¶

Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, OSError is raised.

msvcrt. LK_NBLCK ¶ msvcrt. LK_NBRLCK ¶

Locks the specified bytes. If the bytes cannot be locked, OSError is raised.

Unlocks the specified bytes, which must have been previously locked.

msvcrt. setmode ( fd , flags ) ¶

Set the line-end translation mode for the file descriptor fd. To set it to text mode, flags should be os.O_TEXT ; for binary, it should be os.O_BINARY .

msvcrt. open_osfhandle ( handle , flags ) ¶

Create a C runtime file descriptor from the file handle handle. The flags parameter should be a bitwise OR of os.O_APPEND , os.O_RDONLY , and os.O_TEXT . The returned file descriptor may be used as a parameter to os.fdopen() to create a file object.

Raises an auditing event msvcrt.open_osfhandle with arguments handle , flags .

Return the file handle for the file descriptor fd. Raises OSError if fd is not recognized.

Raises an auditing event msvcrt.get_osfhandle with argument fd .

Console I/O¶

Return True if a keypress is waiting to be read.

Read a keypress and return the resulting character as a byte string. Nothing is echoed to the console. This call will block if a keypress is not already available, but will not wait for Enter to be pressed. If the pressed key was a special function key, this will return ‘\000’ or ‘\xe0’ ; the next call will return the keycode. The Control — C keypress cannot be read with this function.

Wide char variant of getch() , returning a Unicode value.

Similar to getch() , but the keypress will be echoed if it represents a printable character.

Wide char variant of getche() , returning a Unicode value.

Print the byte string char to the console without buffering.

msvcrt. putwch ( unicode_char ) ¶

Wide char variant of putch() , accepting a Unicode value.

Cause the byte string char to be “pushed back” into the console buffer; it will be the next character read by getch() or getche() .

msvcrt. ungetwch ( unicode_char ) ¶

Wide char variant of ungetch() , accepting a Unicode value.

Other Functions¶

Force the malloc() heap to clean itself up and return unused blocks to the operating system. On failure, this raises OSError .

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ImportError: No module named msvcrt. #1176

ImportError: No module named msvcrt. #1176

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In which file did you encounter the issue?

Did you change the file? If so, how?

The lib folder and the click folder which contained this file was generated when I did «pip install -t lib -r requirements.txt » on the command prompt
requirements.txt just contained one line that said Flask==0.12.2

These were the instructions

Describe the issue

I don’t get any errors when I start the development server, it is only when I try to access localhost:8080 from my browser that the error occurs

The text was updated successfully, but these errors were encountered:

Hi @mikemahon107, what behavior do you see when you try to access localhost:8080 from your browser? Do you get a stack trace at any point that you can share with us?

Add this to appengine_config.py

import os
import sys
on_appengine = os.environ.get(‘SERVER_SOFTWARE’,»).startswith(‘Development’)

if on_appengine and os.name == ‘nt’:
sys.platform = «Not Windows»

This issue is present for a while now. Happens when you try to kickstart a new Python+Flask application in the local development server on windows. Some guys here already did some research:

I opened a ticket on App Engine’s official issue tracker too:
https://issuetracker.google.com/issues/72043776

The reason is that python’s standard set of libraries is different on Windows and Linux. On Windows, the msvcrt module is present, and click is loading that module. App Engine’s isolated environment strips some of the builtin modules too, leaving only the ones that are present on the Linux based cloud, that’s why msvcrt seems to be missing.

Thanks for being persistent and bringing this to our attention! msvcrt will be in the whitelist in the SDK once the change makes it through our testing pipeline.

Issue addressed in comments above.

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«No module named ‘msvcrt'» on Ubuntu 20.04 self-hosted runner #289

«No module named ‘msvcrt'» on Ubuntu 20.04 self-hosted runner #289

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Description:

When following instructions to set up an Ubuntu 20.04 self-hosted runner’s tool cache with Python 3.10, subsequently running a workflow that checks out the repo, sets up python, sets up the scottbrenner/cfn-lint-action@v2 action, and then runs cfn-lint —version results in the following error:

Traceback (most recent call last): File "/opt/hostedtoolcache/Python/3.10.0/x64/lib/python3.10/subprocess.py", line 69, in import msvcrt ModuleNotFoundError: No module named 'msvcrt' 

Deploying the Python tool cache into the Actions runner client’s _work/_tool directory results in a successful run of cfn-lint —version , but then with other workflows encounters errors building Docker containers.

Action version:

Runner type:

Tools version:

Repro steps:

 - name: Setup Python 3.10 uses: actions/setup-python@v2 with: python-version: '3.10' 

1. As per setup-python instructions for deploying to hosted tool cache on Linux, copy and extract artifact to /opt/hostedtoolcache/
2. Attempt to run the following workflow:

 steps: - name: Checkout uses: actions/checkout@v2 - name: Install Python uses: actions/setup-python@v2 with: python-version: '3.x' - name: Setup Cloud Formation Linter with Latest Version uses: scottbrenner/cfn-lint-action@v2 - name: Print the Cloud Formation Linter Version & run Linter. run: | cfn-lint --version cfn-lint 

Expected behavior:

Successful run of second workflow, with an output similar to the following:

Actual behavior:

Receive output similar to the following:

/opt/hostedtoolcache/Python/3.10.0/x64/bin/python3 --version Python 3.10.0 /opt/hostedtoolcache/Python/3.10.0/x64/bin/python3 -m venv /tmp/setup-cfn-lint-3DRQLm/.venv Could not find platform dependent libraries Consider setting $PYTHONHOME to [:] Traceback (most recent call last): File "/opt/hostedtoolcache/Python/3.10.0/x64/lib/python3.10/subprocess.py", line 69, in import msvcrt ModuleNotFoundError: No module named 'msvcrt' . File "/opt/hostedtoolcache/Python/3.10.0/x64/lib/python3.10/subprocess.py", line 74, in import _posixsubprocess ModuleNotFoundError: No module named '_posixsubprocess' 

The output is very unusual, as it references module msvcrt (Microsoft VC++ runtime), despite nothing in the workflow, Python build, or Actions runner involving Windows or the VC++ runtime.

The text was updated successfully, but these errors were encountered:

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