Type conversion in python, python type conversion

Type conversion in python, python type conversion

Function Description

Int (x [, base]) converts x to an integer.

Long (x [, base]) converts x to a long integer.

Float (x) converts x to a floating point number.

Complex (real [, imag]) creates a plural number

Str (x) converts object x to a string

Repr (x) converts object x to an expression string

Eval (str) is used to calculate a valid Python expression in a string and return an object.

Tuple (s) converts the sequence s into a tuples

List (s) converts sequence s into a list

Chr (x) converts an integer to a character

Unichr (x) converts an integer to a Unicode Character

Ord (x) converts a character into its integer

Hex (x) converts an integer into a hexadecimal string.

Oct (x) converts an integer into an octal string

The sequence supports the following operations:

 

Python code

Operation description

S + r sequential join

S * n, n * s n copies, n is an integer

S % d string formatting (string only)

S [I] Index

S [I: j] Slice

X in s, x not in s subordination

For x in s: Iteration

Len (s) Length

Min (s) minimum element

Max (s) maximum element

S [I] = x is s [I] re-assigned

S [I: j] = r: returns the list fragment value.

Del s [I] deletes an element from the list.

Del s [I: j] deletes a clip from the list.

Operation description

S + r sequential join

S * n, n * s n copies, n is an integer

S % d string formatting (string only)

S [I] Index

S [I: j] Slice

X in s, x not in s subordination

For x in s: Iteration

Len (s) Length

Min (s) minimum element

Max (s) maximum element

S [I] = x is s [I] re-assigned

S [I: j] = r: returns the list fragment value.

Del s [I] deletes an element from the list.

Del s [I: j] deletes a clip from the list.

Numeric operation:

 

Python code

X <y shifts left

X> y shift right

X & y

X | y by bit or

X ^ y exclusive or)

~ X flip by bit

X + y plus

X-y Subtraction

X * y Multiplication

X/y

X // y floor Division

X ** y multiplication (xy)

X % y modulo (x mod y)

-X changes the symbol bit of the operand.

+ X does nothing.

~ X ~ X =-(x + 1)

Abs (x) absolute value

Divmod (x, y) returns (int (x/y), x % y)

Pow (x, y [, modulo]) returns (x ** y) x % modulo

Round (x, [n]) Rounding, n is the number of decimal places

X <y is less

X> y is greater

X = y equals

X! = Y is not equal to (same as <>)

X> = y is greater than or equal

X <= y is less than or equal

Type conversion problems in Python

Var is a tuple, such as var = ('Kim ', '23', '123 ')
Name, age, weight = var can be converted

Conversion of date types in python

You can use strptime () and strftime () in the time module ().

Strptime () controls the string interpretation date based on the format you specify,
Strftime () controls the string output date based on the format you specify.

For example, convert "12-Jan-06 10:06:00":

>>> From time import strptime, strftime
>>>
>>> MyDate = '12-Jan-06 10:06'
>>> Parsed = strptime (myDate, '% d-% B-% y % H: % m ')
>>> Converted = strftime ('% Y-% m-% d % H: % M: 00', parsed)
>>>
>>> Converted
'2017-01-12 10:06:00'