# متغیرهای محیطی

/// tip

اگه از قبل می‌دونی متغیرهای محیطی چی هستن و چطور ازشون استفاده می‌شه، می‌تونی این بخش رو رد کنی.

///

یه متغیر محیطی (که بهش "**env var**" هم می‌گن) یه متغیریه که **خارج** از کد پایتون، توی **سیستم‌عامل** زندگی می‌کنه و می‌تونه توسط کد پایتونت (یا برنامه‌های دیگه) خونده بشه.

متغیرهای محیطی می‌تونن برای مدیریت **تنظیمات** برنامه، به‌عنوان بخشی از **نصب** پایتون و غیره مفید باشن.

## ساخت و استفاده از متغیرهای محیطی

```console
$ pip install "harry==1"
```

</div>

И тогда в вашем глобальном окружении Python будет установлен `harry` версии `1`:

```mermaid
flowchart LR
    subgraph global[global env]
        harry-1[harry v1]
    end
    subgraph stone-project[philosophers-stone project]
        stone(philosophers-stone) -->|requires| harry-1
    end
```

#!/usr/bin/env bash
#
# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,

            }
    }
}

fun BaseGradleBuildType.tcParallelTests(numberOfBatches: Int) {
    if (numberOfBatches > 1) {
        params {
            param("env.TEAMCITY_PARALLEL_TESTS_ENABLED", "1")
        }
        features {
            parallelTests {
                this.numberOfBatches = numberOfBatches
            }
        }
    }
}

```sh
$ mc admin config set myminio identity_plugin --env
KEY:
identity_plugin  enable Identity Plugin via external hook

ARGS:
MINIO_IDENTITY_PLUGIN_URL*          (url)       plugin hook endpoint (HTTP(S)) e.g. "http://localhost:8181/path/to/endpoint"

     * Returns immutable system properties to use for interpolation. The system properties are collected from the
     * runtime environment such as {@link System#getProperties()} and environment variables
     * (prefixed with {@code env.}).
     *
     * @return the system properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getSystemProperties();

    /**
     * Returns the properly overlaid map of properties: system + user.

RUN curl https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-cli-linux-arm.tar.gz | \
    tar zxf - google-cloud-sdk && \
    google-cloud-sdk/install.sh --quiet
ENV PATH="$PATH:/google-cloud-sdk/bin/"

# Install various tools.
# - bats: bash unit testing framework
#         NOTE: v1.6.0 seems to have a bug that made "git" in setup_file break

# ----------------------------------------------------------------------------
# Apache Maven Wrapper startup batch script, version 3.3.2
#
# Optional ENV vars
# -----------------
#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
#   MVNW_REPOURL - repo url base for downloading maven distribution

# Omgevingsvariabelen

/// tip

Als je al weet wat "omgevingsvariabelen" zijn en hoe je ze kunt gebruiken, kun je deze stap gerust overslaan.

///

Een omgevingsvariabele (ook bekend als "**env var**") is een variabele die **buiten** de Python-code leeft, in het **besturingssysteem** en die door je Python-code (of door andere programma's) kan worden gelezen.

	}
	writeSuccessResponseJSON(w, v)
}

// KMSCreateKeyHandler - POST /minio/kms/v1/key/create?key-id=<master-key-id>
func (a kmsAPIHandlers) KMSCreateKeyHandler(w http.ResponseWriter, r *http.Request) {
	// If env variable MINIO_KMS_SECRET_KEY is populated, prevent creation of new keys
	ctx := newContext(r, w, "KMSCreateKey")
	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))