QDoubleValidator¶

PyQt5.QtGui.QDoubleValidator: Inherits from QValidator.

Description¶

The QDoubleValidator class provides range checking of floating-point numbers.

QDoubleValidator provides an upper bound, a lower bound, and a limit on the number of digits after the decimal point. It does not provide a fixup() function.

You can set the acceptable range in one call with setRange(), or with setBottom() and setTop(). Set the number of decimal places with setDecimals(). The validate() function returns the validation state.

QDoubleValidator uses its locale() to interpret the number. For example, in the German locale, “1,234” will be accepted as the fractional number 1.234. In Arabic locales, QDoubleValidator will accept Arabic digits.

Note: The QLocale::NumberOptions set on the locale() also affect the way the number is interpreted. For example, since RejectGroupSeparator is not set by default, the validator will accept group separators. It is thus recommended to use toDouble() to obtain the numeric value.

Enums¶

Notation

This enum defines the allowed notations for entering a double.

Member	Value	Description
ScientificNotation	1	The string is written in scientific form. It may have an exponent part(i.e. 1.5E-2).
StandardNotation	0	The string is written as a standard number (i.e. 0.015).

Methods¶

__init__(parent: QObject = None): Constructs a validator object with a parent object that accepts any double.

__init__(float, float, int, parent: QObject = None): Constructs a validator object with a parent object. This validator will accept doubles from bottom to top inclusive, with up to decimals digits after the decimal point.

bottom() → float: See also

setBottom().

decimals() → int: See also

setDecimals().

notation() → Notation: See also

setNotation().

setBottom(float): See also

bottom().

setDecimals(int): See also

decimals().

setNotation(Notation): See also

notation().

setRange(float, float, decimals: int = 0): Sets the validator to accept doubles from minimum to maximum inclusive, with at most decimals digits after the decimal point.

setTop(float): See also

top().

top() → float: See also

setTop().

validate(str, int) → (State, str, int): TODO