3 exemplos de software open source

This value is not locale-dependent and will not change. String of ASCII characters which are considered printable. A string containing all ASCII characters that are considered whitespace. This includes the characters space, tab, linefeed, 3 exemplos de software open source, formfeed, and vertical tab.

It takes a format string and an arbitrary set of positional and keyword arguments. This function does the actual work of formatting. It calls the various methods described below. The values in the tuple conceptually represent a span of literal text followed by a single replacement field. The key argument will be either an integer or a string. Subsequent components are handled through normal attribute and indexing operations. Implement checking for unused arguments if desired.

The method is provided so that subclasses can override it. Anything that is not contained in braces is considered literal text, which is copied unchanged to the output. In less formal terms, the replacement field can start with a field_name that specifies the object whose value is to be formatted and inserted into the output instead of the replacement field. The field_name is optionally followed by a conversion field, which is preceded by an exclamation point ‘! These specify a non-default format for the replacement value. The field_name itself begins with an arg_name that is either a number or a keyword. If it’s a number, it refers to a positional argument, and if it’s a keyword, it refers to a named keyword argument.

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The arg_name can be followed by any number of index or attribute expressions. An expression of the form ‘. The positional argument specifiers can be omitted for str. First element of keyword argument ‘players’. The conversion field causes a type coercion before formatting. However, in some cases it is desirable to force a type to be formatted as a string, overriding its own definition of formatting. Three conversion flags are currently supported: ‘!

The format_spec field contains a specification of how the value should be presented, including such details as field width, alignment, padding, decimal precision and so on. Most built-in types support a common formatting mini-language, which is described in the next section. A format_spec field can also include nested replacement fields within it. These nested replacement fields may contain a field name, conversion flag and format specification, but deeper nesting is not allowed. The replacement fields within the format_spec are substituted before the format_spec string is interpreted. This allows the formatting of a value to be dynamically specified.