abcs and 123s

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URL explanation and URL encoding

letters, numbers, ~! @ # $ * () =:/,;? + ' to encode. 12 encodeURI("[emailprotected]#$*()=:/,;?+‘")// [emailprotected]#$*()=:/,;?+‘ encodeURIComponent ()Hey, sometimes our URL looks like this, with another URL in the request parameter: 1 varURL ="http://www.a.com?foo=http://www.b.com?t=123s=456"; It is obviously not possible to encodeuri it directly. Because the encodeURI does not esca

"Base advanced" url details and URL encoding

%20c"//and escape will be encoded into the following, eocode the colon but no encode slash, very strange, So abandoned escape (' https://www.baidu.com/a b C ')//"https%3a//www.baidu.com/%20a%20b%20c" encodeURI ()encodeURI () is a function in Javascript that is really used to encode URLs. It looks at encoding the entire URL .encodeURI ("Http://www.cnblogs.com/season-huang/some other Thing");//"http://www.cnblogs.com/season-huang/some% 20other%20thing ";After the encoding becomes the above result,

Little Y's Python learning log--python2.0 and 3.0 some differences

Unicode.2) for the byte string, refer to the 2nd item in the data type5. Data type1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.e

Python is learning a

The metacharacters. ^ $ * + ? {}. The match is: If a match is written to a point, if you match more than one word, write a few dots >>> a = re.findall (' b...dd ', ' BSSSDD ') >>> print (a) [' BSSSDD '] such as: > A = Re.findall (' B.. DD ', ' BSSSDD ') >>> print (a) [] explanation: Since the two points need to match the middle there are three causes that cannot match the ^ expression:>>> re.findall (' ^a. S ', ' abcsassss ') [' ABCs ']>>> re.findall

The difference between Python2 and Python3

of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.encode ()>>> B1B ' China '3) Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. And it's also removed.Dict.has_key (), replace it with in.6. Object-oriented1) Introduce

The difference between python3.x and python2.x

. Strings and byte strings1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode.2) for the byte string, refer to the 2nd item in the data type5. Data type1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be conver

The difference between Python2 and Python3

Pep 3129 for more4. Strings and byte strings 1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode.2) for the byte string, refer to the 2nd item in the data type5. Data type 1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes

The difference between python3.x and python2.x (turn)

behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.encode ()>>> B1B ' China '3) Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. A

python3.x and python2.x The difference introduction _python

eight-bit string, which defines a bytes literal method as follows:>>> B = B ' It '>>> type (b)The Str object and the Bytes object can be converted to each other using the. encode () (str-> bytes) or. Decode () (bytes-> str) method.>>> s = B.decode ()>>> s' I '>>> B1 = S.encode ()>>> B1B ' I '3 The Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. And also removed from theDict.has_key (), replace it with in. 6. Object-o

python3.x and python2.x differences

version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.encode ()>>> B1B ' China '3) Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. And it's also removed.Dict.has_key (), replace it with in.6. Object-oriented1) In

Experience with Python 3.0

) Introduce abstract base classes (abstraact base classes, ABCs ). 2) The container class and iterator class are ABCs, so the types in the cellections module are much higher than those in py2.5. >>> Import collections >>> print ('/N '. join (Dir (collections) Explain quencesetsizedvaluesview _ all ____ builtins ____ Doc ____ file ____ name ___ abcoll_itemgetter_sysdefadicdictdeque In addition, the value typ

The distinction between Python3 and python2.7

3129 for more 4. Strings and Byte strings 1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode. 2) for the byte string, refer to the 2nd item in the data type 5. Data type 1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long 2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows: >>> B = B ' China ' >>> type (b) str objects and B

Python3 and python2.7 respectively

) introduce abstract Base Classes (Abstraact Base Classes, ABCs ). 2) the container class and iterator class are ABCs, so the types in the cellections module are much more than Py2.5. >>> Import collections >>> Print ('\ n'. join (dir (collections ))) Callable Container Hashable ItemsView Iterable Iterator KeysView Mapping MappingView MutableMapping MutableSequence MutableSet NamedTuple Sequence Set Sized V

python3.x and 2.x difference

only one integer--int, but it behaves like 2. The x version of Long 2) adds the bytes type, which corresponds to 2. X version of the eight-bit string, define a bytes literal in the following way: >>> b = B ' China ' >>> type (b str objects and Bytes objects can be used. Encode () (str, bytes) or. Decode () (bytes-S TR) method to convert each other. >>> s = B.decode () >>> s ' China ' >>> B1 = S.encode () >>> B1 B ' China ' 3] dict. Keys (),. Items, and. Values () methods re

Differences between python3.0 and 2.x

1) currently, only one type of string is available, but it is almost the same as unicode in 2.x.2) For a byte string, see the 2nd entries in "data type ". 6. Data Types 1) Py3.0 removes the long type, and now there is only one integer -- int, But it acts like the long type2) The bytes type is added, which corresponds to the 8-Bit String Of The 2.x version. The following describes how to define a bytes literal: >>> b = b>>> 3) str objects and bytes objects can be converted to each other usin

The main difference between "turn" Python2 and Python3

behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.encode ()>>> B1B ' China '3) Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. A

The difference between Python 2.x and python3.x

. Strings and byte strings1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode.2) for the byte string, refer to the 2nd item in the data type5. Data type1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be conver

The difference between python3.x and python2.x

like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be converted using the. encode () (str-bytes) or. Decode () (bytes-str) methods.>>> s = B.decode ()>>> s' China '>>> B1 = S.encode ()>>> B1B ' China '3) Dict. Keys (),. Items, and. Values () methods return iterators, and functions such as the previous iterkeys () are discarded. And it's

The difference between python3.x and python2.x

. Strings and byte strings1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode. 2) for the byte string, refer to the 2nd item in the data type5. Data type1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be conve

The difference between Python2 and Python3

. Strings and byte strings1) Now the string is only one type of STR, but it is almost the same as the 2.x version of Unicode.2) for the byte string, refer to the 2nd item in the data type5. Data type1) py3.x removed the long type and now has only one integer--int, but it behaves like 2. X version of Long2) added the bytes type, corresponding to 2. X version of the eight-bit string, define a bytes literal method as follows:>>> B = B ' China '>>> type (b)str objects and Bytes objects can be conver

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