```

...делает параметр необязательным со значением по умолчанию `None`, также как это делает:

```Python
q: str | None = None
```

Но он явно объявляет его как query-параметр.

/// info | "Дополнительная информация"

Запомните, важной частью объявления параметра как необязательного является:

```Python
= None
```

или:

```Python
= Query(default=None)
```

# 1 second intervals between attempts $MC_COMMAND ; STATUS=$? ; done ; set -e ; # reset `e` as active return 0 } # checkPolicyExists ($policy) # Check if the policy exists, by using the exit code of `mc admin policy info` checkPolicyExists() { POLICY=$1 CMD=$(${MC} admin policy info myminio $POLICY > /dev/null 2>&1) return $? } # createPolicy($name, $filename) createPolicy () { NAME=$1 FILENAME=$2 # Create the name if it does not exist echo "Checking policy: $NAME (in /config/$FILENAME.json)" if...

WebargsはFlaskをはじめとするいくつかのフレームワークの上にそれを提供するために作られたツールです。

データのバリデーションを行うために内部ではMarshmallowを使用しており、同じ開発者によって作られました。

素晴らしいツールで、私も**FastAPI**を持つ前はよく使っていました。

/// info | "情報"

Webargsは、Marshmallowと同じ開発者により作られました。

///

/// check | "**FastAPI**へ与えたインスピレーション"

受信したデータに対する自動的なバリデーションを持っている点。

///

# Virtual Environments

When you work in Python projects you probably should use a **virtual environment** (or a similar mechanism) to isolate the packages you install for each project.

/// info

If you already know about virtual environments, how to create them and use them, you might want to skip this section. 🤓

///

/// tip

A **virtual environment** is different than an **environment variable**.

import okhttp3.internal.ignoreIoExceptions
import okhttp3.internal.okHttpName
import okhttp3.internal.peerName
import okhttp3.internal.platform.Platform
import okhttp3.internal.platform.Platform.Companion.INFO
import okhttp3.internal.toHeaders
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.buffer
import okio.sink
import okio.source

/**

# 1 second intervals between attempts $MC_COMMAND ; STATUS=$? ; done ; set -e ; # reset `e` as active return 0 } # checkPolicyExists ($policy) # Check if the policy exists, by using the exit code of `mc admin policy info` checkPolicyExists() { POLICY=$1 CMD=$(${MC} admin policy info myminio $POLICY > /dev/null 2>&1) return $? } # createPolicy($name, $filename) createPolicy () { NAME=$1 FILENAME=$2 # Create the name if it does not exist echo "Checking policy: $NAME (in /config/$FILENAME.json)" if...

# 1 second intervals between attempts $MC_COMMAND ; STATUS=$? ; done ; set -e ; # reset `e` as active return 0 } # checkPolicyExists ($policy) # Check if the policy exists, by using the exit code of `mc admin policy info` checkPolicyExists() { POLICY=$1 CMD=$(${MC} admin policy info myminio $POLICY > /dev/null 2>&1) return $? } # createPolicy($name, $filename) createPolicy () { NAME=$1 FILENAME=$2 # Create the name if it does not exist echo "Checking policy: $NAME (in /config/$FILENAME.json)" if...

my_user: User = User(id=3, name="John Doe", joined="2018-07-19")

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```

/// info

`**second_user_data` bedeutet:

my_user: User = User(id=3, name="John Doe", joined="2018-07-19")

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```

/// info

`**second_user_data` means:

Pass the keys and values of the `second_user_data` dict directly as key-value arguments, equivalent to: `User(id=4, name="Mary", joined="2018-11-30")`

///

### Editor support

my_user: User = User(id=3, name="John Doe", joined="2018-07-19")

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```

/// info

`**second_user_data` oznacza:

Przekaż klucze i wartości słownika `second_user_data` bezpośrednio jako argumenty klucz-wartość, co jest równoznaczne z: `User(id=4, name="Mary", joined="2018-11-30")`

///