Python string format note

Chinese name: string formatting

Function:

1. One parameter can populate multiple format characters

>>> "Hello {}". format ("LSL")

Hello LSL

{} expression grammar:

Replacement_field :: = "{" [field_name] ["!" conversion] [":" format_spec] "}"

The Field_name name descriptor, which can be a name, location, property.

Properties, which I am interested in, so that you can populate multiple formats with just one pass.

The FORMAT_SPEC format descriptor, which can be the padding + alignment number + format.

%xxx, which is basically the same as the format descriptor.

Print ("Helllo%-10s", "33")

Format: Inherits the form of D s F, which is traditional print.

Example

in []: "Hello {people.name:*>10}". Format (PEOPLE=P)
OUT[38]: ' Hello *******LSL '

Https://docs.python.org/2/library/string.html#string-formatting

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Python string format note