The input in question is "floating" until the button is pressed, due to its inputs being of very high impedance.

You need to add a pull-down resistor to the pushbutton, 10k is commonly used, thus:

That way, the Paspberry Pi input sees a false (0 Volts) until the button is pressed, then a true until released.

The input in question is "floating" until the button is pressed, due to its inputs being of very high impedance.

You need to add a pull-down resistor to the pushbutton, 10k is commonly used, thus:

That way, the Raspberry Pi input sees a false (0 Volts) until the button is pressed, then a true until released.

The input in question is "floating" until the button is pressed, due to its inputs being of very high impedance.

You need to add a pull-down resistor to the pushbutton, 10k is commonly used, thus:

That way, the Paspberry Pi input sees a false (0 Volts) until the button is pressed, then a true until released.

The input in question is "floating" until the button is pressed, due to its inputs being of very high impedance.

You need to add a pull-down resistor to the pushbutton, 10k is commonly used, thus:

That way, the Paspberry Pi input sees a false (0 Volts) until the button is pressed, then a true until released.