For example:

test

"Print" it is a% s "%(a)

The result of printing is that it is a test.

2. Look at% as an operation symbol, and find the remainder.

For example:

Modular operation is equivalent to mod, which is to calculate the remainder of division. For example, 5%2 will get 1.

Extended data:

Common operations in% python are %s, %d, %r, etc.

% s,% r and% d indicate that strings are represented by str (), rper () and decimal integer respectively, and %f indicates that the result is floating point.

1, %f floating-point type

Import? mathematics

%a.bf, where a represents the printing length of floating-point number, b represents the precision after decimal point of floating-point number, and %f represents the original value. The default value is 5 digits after the decimal point.

Print? " PI=%f "？ %? math.pi

Output:? PI=3. 14 1593

When it is only %9f, it means that the printing length is 9 digits, and the decimal point also occupies one digit, which is not enough to fill the space on the left.

Print? “PI=%9f”？ %? math.pi

Output:? PI=_3. 14 1593？

2.%d integer

【python】？ View the plain? copy

num= 14

The result of #%d printing is 14.

3.%s string

【python】？ View the plain? copy

String= "Hello"

When %s prints, the result is hello.