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This article mainly explains "what are the data type knowledge points of Python". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what are the data type knowledge points of Python"?

Example of variable method Note using variable stored value name = "xxx"

Print ("name", name)

Consisting of lowercase letters, numbers, and underscores

String method for example note single quotation marks and double quotation marks can

B = "is a 'girl'"

Print ("b =", b)

C ='Is a "girl"'

Print ("c =", c)

Output:

B = is a 'girl'

C = Is a "girl"

Cannot use the same quotation marks

For example, b ='is a 'girl''

^

SyntaxError: invalid syntax

Additive stitching d = "find"

E = "who"

F = d + "" + e

Print ("f =", f) output: F = find who spaces, tabs, newline characters

Space

Tabs\ t

Newline character\ n

D = "find"

E = "who"

F = d + "" + e

Print ("f =", f)

Print ("xxxx\ nxxxx")

Print ("yyyy\ tyyyy")

Output:

F = find who

Xxxx

Xxxx

Yyyy yyyy

Function description Note title each word begins with an uppercase c ='Is a "girl"'

Print ("c =", c)

Print ("title =", c.title ())

Print ("upper =", c.upper ())

Print ("lower =", c.lower ())

Output:

C = Is a "girl"

Title = Is A "Girl"

Upper = IS A "GIRL"

Lower = is a "girl"

Upper all uppercase lower all lowercase lstrip delete opening blank g = "a b c"

Print ("'" + g + "'")

Print ("'" + g.lstrip () + "'")

Print ("'" + g.rstrip () + "'")

Print ("'" + g.strip () + "'")

Output, with spaces marked in red:

'a b c'

'a b c'

'a b c'

'a b c'

Rstrip delete ending white space strip delete beginning and ending blank number operator example Note addition, subtraction, multiplication and division +-* / N1 = 3

N2 = 2

Print (N2 / N1)

Common

The result of division is floating point:

0.6666666666666666

Multiplier * * N1 = 3

N2 = 2

The print (N2 * * N1) example is 2 ^ 3 and the output is 8. Parentheses ()

N1 = 3

N2 = 2

Print (N1 + N2 * 3)

Print ((N1 + N2) * 3)

Use parentheses to define the order of operations

Output:

nine

fifteen

Number to string function description Note strstr (number) returns a string

Convert the number directly to the string:

Print (str (3) + "find")

Convert numeric related variables to strings:

N1 = 3

Print (str (N1) + "find")

Annotation

Use the # logo to describe the code.

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