Python Learning note 10 (User interaction Program)

Comments

Single line: #

Multiple lines: 3 consecutive single or double quotes on top and bottom

3 Quotes In addition to multiple lines of comment, you can also print more than one line

Example:

msg = name = (name) (msg)

Running the result the second print is printing 3 lines of string.

If a single line, use quotation marks: msg = "Alex Li"

In Python, single and double quotes are the same, except for single sets of double or double sets.

Example: Msg = "I ' m Alex Li"

User input

Example:

= () password = () (, password)

Formatted output

%s (string), the difference between%d,%f

Print the data type of the variable: print (type (variable name))

RAW_INTPU Python 2.x

Input Python 3.x

Python2, it is recommended to use the Raw_input, if you use input, you need to enter the value of the string variable when the "" quote.

Classroom Exercises:

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Python Learning note 10 (User interaction Program)