ConnectionId
An opaque handle for a single pooled connection.
Usage
ConnectionId()Connection IDs are generated by the pool and are unique within the lifetime of the process. They appear in log messages and health-check output, so they are strings rather than integers for readability.
See Also
Methods
| Name | Description |
|---|---|
| __add__() | Return self+value. |
| __contains__() | Return bool(key in self). |
| __eq__() | Return self==value. |
| __format__() | Return a formatted version of the string as described by format_spec. |
| __ge__() | Return self>=value. |
| __getitem__() | Return self[key]. |
| __gt__() | Return self>value. |
| __iter__() | Implement iter(self). |
| __le__() | Return self<=value. |
| __len__() | Return len(self). |
| __lt__() | Return self<value. |
| __mod__() | Return self%value. |
| __mul__() | Return self*value. |
| __ne__() | Return self!=value. |
| __new__() | Create and return a new object. See help(type) for accurate signature. |
| __repr__() | Return repr(self). |
| __rmod__() | Return value%self. |
| __rmul__() | Return value*self. |
| __sizeof__() | Return the size of the string in memory, in bytes. |
| __str__() | Return str(self). |
| capitalize() | Return a capitalized version of the string. |
| casefold() | Return a version of the string suitable for caseless comparisons. |
| center() | Return a centered string of length width. |
| count() | Return the number of non-overlapping occurrences of substring sub in string S[start:end]. |
| encode() | Encode the string using the codec registered for encoding. |
| endswith() | Return True if the string ends with the specified suffix, False otherwise. |
| expandtabs() | Return a copy where all tab characters are expanded using spaces. |
| find() | Return the lowest index in S where substring sub is found, such that sub is contained within S[start:end]. |
| format() | Return a formatted version of the string, using substitutions from args and kwargs. |
| format_map() | Return a formatted version of the string, using substitutions from mapping. |
| index() | Return the lowest index in S where substring sub is found, such that sub is contained within S[start:end]. |
| isalnum() | Return True if the string is an alpha-numeric string, False otherwise. |
| isalpha() | Return True if the string is an alphabetic string, False otherwise. |
| isascii() | Return True if all characters in the string are ASCII, False otherwise. |
| isdecimal() | Return True if the string is a decimal string, False otherwise. |
| isdigit() | Return True if the string is a digit string, False otherwise. |
| isidentifier() | Return True if the string is a valid Python identifier, False otherwise. |
| islower() | Return True if the string is a lowercase string, False otherwise. |
| isnumeric() | Return True if the string is a numeric string, False otherwise. |
| isprintable() | Return True if all characters in the string are printable, False otherwise. |
| isspace() | Return True if the string is a whitespace string, False otherwise. |
| istitle() | Return True if the string is a title-cased string, False otherwise. |
| isupper() | Return True if the string is an uppercase string, False otherwise. |
| join() | Concatenate any number of strings. |
| ljust() | Return a left-justified string of length width. |
| lower() | Return a copy of the string converted to lowercase. |
| lstrip() | Return a copy of the string with leading whitespace removed. |
| maketrans() | Return a translation table usable for str.translate(). |
| partition() | Partition the string into three parts using the given separator. |
| removeprefix() | Return a str with the given prefix string removed if present. |
| removesuffix() | Return a str with the given suffix string removed if present. |
| replace() | Return a copy with all occurrences of substring old replaced by new. |
| rfind() | Return the highest index in S where substring sub is found, such that sub is contained within S[start:end]. |
| rindex() | Return the highest index in S where substring sub is found, such that sub is contained within S[start:end]. |
| rjust() | Return a right-justified string of length width. |
| rpartition() | Partition the string into three parts using the given separator. |
| rsplit() | Return a list of the substrings in the string, using sep as the separator string. |
| rstrip() | Return a copy of the string with trailing whitespace removed. |
| split() | Return a list of the substrings in the string, using sep as the separator string. |
| splitlines() | Return a list of the lines in the string, breaking at line boundaries. |
| startswith() | Return True if the string starts with the specified prefix, False otherwise. |
| strip() | Return a copy of the string with leading and trailing whitespace removed. |
| swapcase() | Convert uppercase characters to lowercase and lowercase characters to uppercase. |
| title() | Return a version of the string where each word is titlecased. |
| translate() | Replace each character in the string using the given translation table. |
| upper() | Return a copy of the string converted to uppercase. |
| zfill() | Pad a numeric string with zeros on the left, to fill a field of the given width. |
__add__()
Return self+value.
Usage
__add__(value)__contains__()
Return bool(key in self).
Usage
__contains__(key)__eq__()
Return self==value.
Usage
__eq__(value)__format__()
Return a formatted version of the string as described by format_spec.
Usage
__format__(format_spec)__ge__()
Return self>=value.
Usage
__ge__(value)__getitem__()
Return self[key].
Usage
__getitem__(key)__gt__()
Return self>value.
Usage
__gt__(value)__iter__()
Implement iter(self).
Usage
__iter__()__le__()
Return self<=value.
Usage
__le__(value)__len__()
Return len(self).
Usage
__len__()__lt__()
Return self<value.
Usage
__lt__(value)__mod__()
Return self%value.
Usage
__mod__(value)__mul__()
Return self*value.
Usage
__mul__(value)__ne__()
Return self!=value.
Usage
__ne__(value)__new__()
Create and return a new object. See help(type) for accurate signature.
Usage
__new__(*args, **kwargs)__repr__()
Return repr(self).
Usage
__repr__()__rmod__()
Return value%self.
Usage
__rmod__(value)__rmul__()
Return value*self.
Usage
__rmul__(value)__sizeof__()
Return the size of the string in memory, in bytes.
Usage
__sizeof__()__str__()
Return str(self).
Usage
__str__()capitalize()
Return a capitalized version of the string.
Usage
capitalize()More specifically, make the first character have upper case and the rest lower case.
casefold()
Return a version of the string suitable for caseless comparisons.
Usage
casefold()center()
Return a centered string of length width.
Usage
center(width, fillchar=" ")Padding is done using the specified fill character (default is a space).
count()
Return the number of non-overlapping occurrences of substring sub in string S[start:end].
Usage
count()Optional arguments start and end are interpreted as in slice notation.
encode()
Encode the string using the codec registered for encoding.
Usage
encode(encoding="utf-8", errors="strict")encoding The encoding in which to encode the string. errors The error handling scheme to use for encoding errors. The default is ‘strict’ meaning that encoding errors raise a UnicodeEncodeError. Other possible values are ‘ignore’, ‘replace’ and ‘xmlcharrefreplace’ as well as any other name registered with codecs.register_error that can handle UnicodeEncodeErrors.
endswith()
Return True if the string ends with the specified suffix, False otherwise.
Usage
endswith()suffix A string or a tuple of strings to try. start Optional start position. Default: start of the string. end Optional stop position. Default: end of the string.
expandtabs()
Return a copy where all tab characters are expanded using spaces.
Usage
expandtabs(tabsize=8)If tabsize is not given, a tab size of 8 characters is assumed.
find()
Return the lowest index in S where substring sub is found, such that sub is contained within S[start:end].
Usage
find()Optional arguments start and end are interpreted as in slice notation. Return -1 on failure.
format()
Return a formatted version of the string, using substitutions from args and kwargs.
Usage
format(*args, **kwargs)The substitutions are identified by braces (‘{’ and ‘}’).
format_map()
Return a formatted version of the string, using substitutions from mapping.
Usage
format_map(mapping)The substitutions are identified by braces (‘{’ and ‘}’).
index()
Return the lowest index in S where substring sub is found, such that sub is contained within S[start:end].
Usage
index()Optional arguments start and end are interpreted as in slice notation. Raises ValueError when the substring is not found.
isalnum()
Return True if the string is an alpha-numeric string, False otherwise.
Usage
isalnum()A string is alpha-numeric if all characters in the string are alpha-numeric and there is at least one character in the string.
isalpha()
Return True if the string is an alphabetic string, False otherwise.
Usage
isalpha()A string is alphabetic if all characters in the string are alphabetic and there is at least one character in the string.
isascii()
Return True if all characters in the string are ASCII, False otherwise.
Usage
isascii()ASCII characters have code points in the range U+0000-U+007F. Empty string is ASCII too.
isdecimal()
Return True if the string is a decimal string, False otherwise.
Usage
isdecimal()A string is a decimal string if all characters in the string are decimal and there is at least one character in the string.
isdigit()
Return True if the string is a digit string, False otherwise.
Usage
isdigit()A string is a digit string if all characters in the string are digits and there is at least one character in the string.
isidentifier()
Return True if the string is a valid Python identifier, False otherwise.
Usage
isidentifier()Call keyword.iskeyword(s) to test whether string s is a reserved identifier, such as “def” or “class”.
islower()
Return True if the string is a lowercase string, False otherwise.
Usage
islower()A string is lowercase if all cased characters in the string are lowercase and there is at least one cased character in the string.
isnumeric()
Return True if the string is a numeric string, False otherwise.
Usage
isnumeric()A string is numeric if all characters in the string are numeric and there is at least one character in the string.
isprintable()
Return True if all characters in the string are printable, False otherwise.
Usage
isprintable()A character is printable if repr() may use it in its output.
isspace()
Return True if the string is a whitespace string, False otherwise.
Usage
isspace()A string is whitespace if all characters in the string are whitespace and there is at least one character in the string.
istitle()
Return True if the string is a title-cased string, False otherwise.
Usage
istitle()In a title-cased string, upper- and title-case characters may only follow uncased characters and lowercase characters only cased ones.
isupper()
Return True if the string is an uppercase string, False otherwise.
Usage
isupper()A string is uppercase if all cased characters in the string are uppercase and there is at least one cased character in the string.
join()
Concatenate any number of strings.
Usage
join(iterable)The string whose method is called is inserted in between each given string. The result is returned as a new string.
Examples
‘.’.join([‘ab’, ‘pq’, ‘rs’]) -> ‘ab.pq.rs’ljust()
Return a left-justified string of length width.
Usage
ljust(width, fillchar=" ")Padding is done using the specified fill character (default is a space).
lower()
Return a copy of the string converted to lowercase.
Usage
lower()lstrip()
Return a copy of the string with leading whitespace removed.
Usage
lstrip(chars=None)If chars is given and not None, remove characters in chars instead.
maketrans()
Return a translation table usable for str.translate().
Usage
maketrans()If there is only one argument, it must be a dictionary mapping Unicode ordinals (integers) or characters to Unicode ordinals, strings or None. Character keys will be then converted to ordinals. If there are two arguments, they must be strings of equal length, and in the resulting dictionary, each character in x will be mapped to the character at the same position in y. If there is a third argument, it must be a string, whose characters will be mapped to None in the result.
partition()
Partition the string into three parts using the given separator.
Usage
partition(sep)This will search for the separator in the string. If the separator is found, returns a 3-tuple containing the part before the separator, the separator itself, and the part after it.
If the separator is not found, returns a 3-tuple containing the original string and two empty strings.
removeprefix()
Return a str with the given prefix string removed if present.
Usage
removeprefix(prefix)If the string starts with the prefix string, return string[len(prefix):]. Otherwise, return a copy of the original string.
removesuffix()
Return a str with the given suffix string removed if present.
Usage
removesuffix(suffix)If the string ends with the suffix string and that suffix is not empty, return string[:-len(suffix)]. Otherwise, return a copy of the original string.
replace()
Return a copy with all occurrences of substring old replaced by new.
Usage
replace(old, new, /, count=-1)count Maximum number of occurrences to replace. -1 (the default value) means replace all occurrences.
If the optional argument count is given, only the first count occurrences are replaced.
rfind()
Return the highest index in S where substring sub is found, such that sub is contained within S[start:end].
Usage
rfind()Optional arguments start and end are interpreted as in slice notation. Return -1 on failure.
rindex()
Return the highest index in S where substring sub is found, such that sub is contained within S[start:end].
Usage
rindex()Optional arguments start and end are interpreted as in slice notation. Raises ValueError when the substring is not found.
rjust()
Return a right-justified string of length width.
Usage
rjust(width, fillchar=" ")Padding is done using the specified fill character (default is a space).
rpartition()
Partition the string into three parts using the given separator.
Usage
rpartition(sep)This will search for the separator in the string, starting at the end. If the separator is found, returns a 3-tuple containing the part before the separator, the separator itself, and the part after it.
If the separator is not found, returns a 3-tuple containing two empty strings and the original string.
rsplit()
Return a list of the substrings in the string, using sep as the separator string.
Usage
rsplit(sep=None, maxsplit=-1)sep The separator used to split the string.
When set to None (the default value), will split on any
whitespace character (including \n \r \t \f and spaces) and
will discard empty strings from the result.maxsplit Maximum number of splits. -1 (the default value) means no limit.
Splitting starts at the end of the string and works to the front.
rstrip()
Return a copy of the string with trailing whitespace removed.
Usage
rstrip(chars=None)If chars is given and not None, remove characters in chars instead.
split()
Return a list of the substrings in the string, using sep as the separator string.
Usage
split(sep=None, maxsplit=-1)sep The separator used to split the string.
When set to None (the default value), will split on any
whitespace character (including \n \r \t \f and spaces) and
will discard empty strings from the result.maxsplit Maximum number of splits. -1 (the default value) means no limit.
Splitting starts at the front of the string and works to the end.
Note, str.split() is mainly useful for data that has been intentionally delimited. With natural text that includes punctuation, consider using the regular expression module.
splitlines()
Return a list of the lines in the string, breaking at line boundaries.
Usage
splitlines(keepends=False)Line breaks are not included in the resulting list unless keepends is given and true.
startswith()
Return True if the string starts with the specified prefix, False otherwise.
Usage
startswith()prefix A string or a tuple of strings to try. start Optional start position. Default: start of the string. end Optional stop position. Default: end of the string.
strip()
Return a copy of the string with leading and trailing whitespace removed.
Usage
strip(chars=None)If chars is given and not None, remove characters in chars instead.
swapcase()
Convert uppercase characters to lowercase and lowercase characters to uppercase.
Usage
swapcase()title()
Return a version of the string where each word is titlecased.
Usage
title()More specifically, words start with uppercased characters and all remaining cased characters have lower case.
translate()
Replace each character in the string using the given translation table.
Usage
translate(table)table Translation table, which must be a mapping of Unicode ordinals to Unicode ordinals, strings, or None.
The table must implement lookup/indexing via getitem, for instance a dictionary or list. If this operation raises LookupError, the character is left untouched. Characters mapped to None are deleted.
upper()
Return a copy of the string converted to uppercase.
Usage
upper()zfill()
Pad a numeric string with zeros on the left, to fill a field of the given width.
Usage
zfill(width)The string is never truncated.