[3.7] bpo-35128: Fix spacing issues in warning.warn() messages. (GH-10268). (GH-10280)

(cherry picked from commit 4b5e62d)

Co-authored-by: Pablo Aguiar <[email protected]>

Author: serhiy-storchaka

Lib/ftplib.py

@@ -732,7 +732,7 @@ def __init__(self, host='', user='', passwd='', acct='', keyfile=None,
                                  "exclusive")
             if keyfile is not None or certfile is not None:
                 import warnings
-                warnings.warn("keyfile and certfile are deprecated, use a"
+                warnings.warn("keyfile and certfile are deprecated, use a "
                               "custom context instead", DeprecationWarning, 2)
             self.keyfile = keyfile
             self.certfile = certfile

Lib/imaplib.py

@@ -1277,7 +1277,7 @@ def __init__(self, host='', port=IMAP4_SSL_PORT, keyfile=None,
                                  "exclusive")
             if keyfile is not None or certfile is not None:
                 import warnings
-                warnings.warn("keyfile and certfile are deprecated, use a"
+                warnings.warn("keyfile and certfile are deprecated, use a "
                               "custom ssl_context instead", DeprecationWarning, 2)
             self.keyfile = keyfile
             self.certfile = certfile

Lib/poplib.py

@@ -436,7 +436,7 @@ def __init__(self, host, port=POP3_SSL_PORT, keyfile=None, certfile=None,
                                  "exclusive")
             if keyfile is not None or certfile is not None:
                 import warnings
-                warnings.warn("keyfile and certfile are deprecated, use a"
+                warnings.warn("keyfile and certfile are deprecated, use a "
                               "custom context instead", DeprecationWarning, 2)
             self.keyfile = keyfile
             self.certfile = certfile

Lib/smtplib.py

@@ -762,7 +762,7 @@ def starttls(self, keyfile=None, certfile=None, context=None):
                                  "exclusive")
             if keyfile is not None or certfile is not None:
                 import warnings
-                warnings.warn("keyfile and certfile are deprecated, use a"
+                warnings.warn("keyfile and certfile are deprecated, use a "
                               "custom context instead", DeprecationWarning, 2)
             if context is None:
                 context = ssl._create_stdlib_context(certfile=certfile,
@@ -1019,7 +1019,7 @@ def __init__(self, host='', port=0, local_hostname=None,
                                  "exclusive")
             if keyfile is not None or certfile is not None:
                 import warnings
-                warnings.warn("keyfile and certfile are deprecated, use a"
+                warnings.warn("keyfile and certfile are deprecated, use a "
                               "custom context instead", DeprecationWarning, 2)
             self.keyfile = keyfile
             self.certfile = certfile