stdlib: add argument default values (#9501)

stdlib/ftplib.pyi

@@ -44,14 +44,14 @@ class FTP:
     if sys.version_info >= (3, 9):
         def __init__(
             self,
-            host: str = ...,
-            user: str = ...,
-            passwd: str = ...,
-            acct: str = ...,
+            host: str = "",
+            user: str = "",
+            passwd: str = "",
+            acct: str = "",
             timeout: float = ...,
-            source_address: tuple[str, int] | None = ...,
+            source_address: tuple[str, int] | None = None,
             *,
-            encoding: str = ...,
+            encoding: str = "utf-8",
         ) -> None: ...
     else:
         def __init__(
@@ -65,7 +65,7 @@ class FTP:
         ) -> None: ...
 
     def connect(
-        self, host: str = ..., port: int = ..., timeout: float = ..., source_address: tuple[str, int] | None = ...
+        self, host: str = "", port: int = 0, timeout: float = -999, source_address: tuple[str, int] | None = None
     ) -> str: ...
     def getwelcome(self) -> str: ...
     def set_debuglevel(self, level: int) -> None: ...
@@ -85,28 +85,28 @@ class FTP:
     def sendeprt(self, host: str, port: int) -> str: ...
     def makeport(self) -> socket: ...
     def makepasv(self) -> tuple[str, int]: ...
-    def login(self, user: str = ..., passwd: str = ..., acct: str = ...) -> str: ...
+    def login(self, user: str = "", passwd: str = "", acct: str = "") -> str: ...
     # In practice, `rest` rest can actually be anything whose str() is an integer sequence, so to make it simple we allow integers.
-    def ntransfercmd(self, cmd: str, rest: int | str | None = ...) -> tuple[socket, int]: ...
-    def transfercmd(self, cmd: str, rest: int | str | None = ...) -> socket: ...
+    def ntransfercmd(self, cmd: str, rest: int | str | None = None) -> tuple[socket, int]: ...
+    def transfercmd(self, cmd: str, rest: int | str | None = None) -> socket: ...
     def retrbinary(
-        self, cmd: str, callback: Callable[[bytes], object], blocksize: int = ..., rest: int | str | None = ...
+        self, cmd: str, callback: Callable[[bytes], object], blocksize: int = 8192, rest: int | str | None = None
     ) -> str: ...
     def storbinary(
         self,
         cmd: str,
         fp: SupportsRead[bytes],
-        blocksize: int = ...,
-        callback: Callable[[bytes], object] | None = ...,
-        rest: int | str | None = ...,
+        blocksize: int = 8192,
+        callback: Callable[[bytes], object] | None = None,
+        rest: int | str | None = None,
     ) -> str: ...
-    def retrlines(self, cmd: str, callback: Callable[[str], object] | None = ...) -> str: ...
-    def storlines(self, cmd: str, fp: SupportsReadline[bytes], callback: Callable[[bytes], object] | None = ...) -> str: ...
+    def retrlines(self, cmd: str, callback: Callable[[str], object] | None = None) -> str: ...
+    def storlines(self, cmd: str, fp: SupportsReadline[bytes], callback: Callable[[bytes], object] | None = None) -> str: ...
     def acct(self, password: str) -> str: ...
     def nlst(self, *args: str) -> list[str]: ...
     # Technically only the last arg can be a Callable but ...
     def dir(self, *args: str | Callable[[str], object]) -> None: ...
-    def mlsd(self, path: str = ..., facts: Iterable[str] = ...) -> Iterator[tuple[str, dict[str, str]]]: ...
+    def mlsd(self, path: str = "", facts: Iterable[str] = ...) -> Iterator[tuple[str, dict[str, str]]]: ...
     def rename(self, fromname: str, toname: str) -> str: ...
     def delete(self, filename: str) -> str: ...
     def cwd(self, dirname: str) -> str: ...
@@ -121,17 +121,17 @@ class FTP_TLS(FTP):
     if sys.version_info >= (3, 9):
         def __init__(
             self,
-            host: str = ...,
-            user: str = ...,
-            passwd: str = ...,
-            acct: str = ...,
-            keyfile: str | None = ...,
-            certfile: str | None = ...,
-            context: SSLContext | None = ...,
+            host: str = "",
+            user: str = "",
+            passwd: str = "",
+            acct: str = "",
+            keyfile: str | None = None,
+            certfile: str | None = None,
+            context: SSLContext | None = None,
             timeout: float = ...,
-            source_address: tuple[str, int] | None = ...,
+            source_address: tuple[str, int] | None = None,
             *,
-            encoding: str = ...,
+            encoding: str = "utf-8",
         ) -> None: ...
     else:
         def __init__(
@@ -150,7 +150,7 @@ class FTP_TLS(FTP):
     keyfile: str | None
     certfile: str | None
     context: SSLContext
-    def login(self, user: str = ..., passwd: str = ..., acct: str = ..., secure: bool = ...) -> str: ...
+    def login(self, user: str = "", passwd: str = "", acct: str = "", secure: bool = True) -> str: ...
     def auth(self) -> str: ...
     def prot_p(self) -> str: ...
     def prot_c(self) -> str: ...
@@ -161,5 +161,5 @@ def parse227(resp: str) -> tuple[str, int]: ...  # undocumented
 def parse229(resp: str, peer: Any) -> tuple[str, int]: ...  # undocumented
 def parse257(resp: str) -> str: ...  # undocumented
 def ftpcp(
-    source: FTP, sourcename: str, target: FTP, targetname: str = ..., type: Literal["A", "I"] = ...
+    source: FTP, sourcename: str, target: FTP, targetname: str = "", type: Literal["A", "I"] = "I"
 ) -> None: ...  # undocumented