<span style="background-color:#007166"><font color="#D3D7CF"> app </font></span>  Using import string: <font color="#3465A4">main:app</font>

   <span style="background-color:#007166"><font color="#D3D7CF"> server </font></span>  Server started at <font color="#729FCF"><u style="text-decoration-style:solid">http://0.0.0.0:8000</u></font>

# 查詢參數與字串驗證 { #query-parameters-and-string-validations }

FastAPI 允許你為參數宣告額外的資訊與驗證。

以下面這個應用為例：

{* ../../docs_src/query_params_str_validations/tutorial001_py310.py hl[7] *}

查詢參數 `q` 的型別是 `str | None`，表示它是 `str` 但也可以是 `None`，而且預設值就是 `None`，因此 FastAPI 會知道它不是必填。

/// note | 注意

FastAPI 會因為預設值是 `= None` 而知道 `q` 不是必填。

使用 `str | None` 也能讓你的編輯器提供更好的支援並偵測錯誤。

///

## 額外驗證 { #additional-validation }

pode conter vários campos. <details><summary>Campos de <code>license_info</code></summary><table><thead><tr><th>Parâmetro</th><th>Tipo</th><th>Descrição</th></tr></thead><tbody><tr><td><code>name</code></td><td><code>str</code></td><td><strong>OBRIGATÓRIO</strong> (se um <code>license_info</code> for definido). O nome da licença usada para a API.</td></tr><tr><td><code>identifier</code></td><td><code>str</code></td><td>Uma expressão de licença [SPDX](https://spdx.org/licenses/) para a API. O campo...

* Fix a bug where kubelet would not retry pod sandbox creation when the restart policy of the pod is Never ([#79451](https://github.com/kubernetes/kubernetes/pull/79451), [@yujuhong](https://github.com/yujuhong))

            byte[] dst = new byte[config[0]];
            int dstIndex = config[1];

            int result = response.writeBytesWireFormat(dst, dstIndex);

            assertEquals(0, result, String.format("Should return 0 for buffer size %d at index %d", config[0], config[1]));
        }
    }

#     avx_win:                Build with avx instruction set on windows
#
# Other build options:
#     short_logs:       Only log errors during build, skip warnings.
#     verbose_logs:     Show all compiler warnings during build.
#     monolithic:       Build all TF C++ code into a single shared object.
#     dynamic_kernels:  Try to link all kernels dynamically (experimental).

create after install: ```bash helm install --set buckets[0].name=bucket1,buckets[0].policy=none,buckets[0].purge=false minio/minio ``` Description of the configuration parameters used above - - `buckets[].name` - name of the bucket to create, must be a string with length > 0 - `buckets[].policy` - can be one of none|download|upload|public - `buckets[].purge` - purge if bucket exists already Uninstalling the Chart ---------- Assuming your release is named as `my-release`, delete it using the command: ```bash...

create after install: ```bash helm install --set buckets[0].name=bucket1,buckets[0].policy=none,buckets[0].purge=false minio/minio ``` Description of the configuration parameters used above - - `buckets[].name` - name of the bucket to create, must be a string with length > 0 - `buckets[].policy` - can be one of none|download|upload|public - `buckets[].purge` - purge if bucket exists already Uninstalling the Chart ---------- Assuming your release is named as `my-release`, delete it using the command: ```bash...

create after install: ```bash helm install --set buckets[0].name=bucket1,buckets[0].policy=none,buckets[0].purge=false minio/minio ``` Description of the configuration parameters used above - - `buckets[].name` - name of the bucket to create, must be a string with length > 0 - `buckets[].policy` - can be one of none|download|upload|public - `buckets[].purge` - purge if bucket exists already Uninstalling the Chart ---------- Assuming your release is named as `my-release`, delete it using the command: ```bash...

create after install: ```bash helm install --set buckets[0].name=bucket1,buckets[0].policy=none,buckets[0].purge=false minio/minio ``` Description of the configuration parameters used above - - `buckets[].name` - name of the bucket to create, must be a string with length > 0 - `buckets[].policy` - can be one of none|download|upload|public - `buckets[].purge` - purge if bucket exists already Uninstalling the Chart ---------- Assuming your release is named as `my-release`, delete it using the command: ```bash...