cpovirk <******@****.***> 1747161777 -0700

   * {@link java.io.PrintWriter#format PrintWriter.format}, and related methods. These support the
   * full range of <a
   * href="https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/Formatter.html#syntax">format
   * specifiers</a>, and alert you to usage errors by throwing {@link
   * java.util.IllegalFormatException}.
   *

cpovirk <******@****.***> 1761667077 -0700

我们会使用 `yield` 创建一个 FastAPI **依赖项**，为每个请求提供一个新的 `Session`。这确保我们每个请求使用一个单独的会话。🤓

然后我们创建一个 `Annotated` 的依赖项 `SessionDep` 来简化其他也会用到此依赖的代码。

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30]  hl[25:27,30] *}

### 在启动时创建数据库表 { #create-database-tables-on-startup }

我们会在应用程序启动时创建数据库表。

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[32:37] hl[35:37] *}

此处，在应用程序启动事件中，我们创建了表。

   * recorded on a medium. (The position of this character does not necessarily correspond to the
   * physical end of the medium.)
   *
   * @since 8.0
   */
  public static final byte EM = 25;

  /**
   * Substitute: A character that may be substituted for a character which is determined to be
   * invalid or in error.
   *
   * @since 8.0
   */
  public static final byte SUB = 26;

pkg debug/elf, const R_390_PLT32 = 8
pkg debug/elf, const R_390_PLT32 R_390
pkg debug/elf, const R_390_PLT32DBL = 20
pkg debug/elf, const R_390_PLT32DBL R_390
pkg debug/elf, const R_390_PLT64 = 25
pkg debug/elf, const R_390_PLT64 R_390
pkg debug/elf, const R_390_RELATIVE = 12
pkg debug/elf, const R_390_RELATIVE R_390
pkg debug/elf, const R_390_TLS_DTPMOD = 54
pkg debug/elf, const R_390_TLS_DTPMOD R_390

Sebastián Ramírez <******@****.***> 1774016988 +0100

cpovirk <******@****.***> 1747161777 -0700

pkg debug/dwarf, const AttrStaticLink = 72
pkg debug/dwarf, const AttrStmtList = 16
pkg debug/dwarf, const AttrStride = 81
pkg debug/dwarf, const AttrStrideSize = 46
pkg debug/dwarf, const AttrStringLength = 25
pkg debug/dwarf, const AttrTrampoline = 86
pkg debug/dwarf, const AttrType = 73
pkg debug/dwarf, const AttrUpperBound = 47
pkg debug/dwarf, const AttrUseLocation = 74
pkg debug/dwarf, const AttrUseUTF8 = 83

0000080 d0 43 b6 f8 71 df 96 3c e7 a4 69 ce bf cf e9 79
0000090 ce ef 79 3f bf f1 31 db b6 bb 31 76 92 e7 f3 07
00000a0 8b fc 9c ca cc 08 cc cb cc 5e d2 1c 88 d9 7e bb
00000b0 4f bb 3a 3f 75 f1 5d 7f 8f c2 68 67 77 8f 25 ff
00000c0 84 e2 93 2d ef a4 95 3d 71 4e 2c b9 b0 87 c3 be
00000d0 3d f8 a7 60 24 61 c5 ef ae 9e c8 6c 6d 4e 69 c8
00000e0 67 65 34 f8 37 76 2d 76 5c 54 f3 95 65 49 c7 0f
00000f0 18 71 4b 7e 5b 6a d1 79 47 61 41 b0 4e 2a 74 45