# Copyright (c) 2014 Adafruit Industries
# Author: Tony DiCola
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import time

from Adafruit_LED_Backpack import SevenSegment


# Create display instance on default I2C address (0x70) and bus number.
display = SevenSegment.SevenSegment()

# Alternatively, create a display with a specific I2C address and/or bus.
# display = SevenSegment.SevenSegment(address=0x74, bus=1)

# Initialize the display. Must be called once before using the display.
display.begin()

# Run through different number printing examples.
print 'Press Ctrl-C to quit.'
numbers = [0.0, 1.0, -1.0, 0.55, -0.55, 10.23, -10.2, 100.5, -100.5]
while True:
	# Print floating point values with default 2 digit precision.
	for i in numbers:
		# Clear the display buffer.
		display.clear()
		# Print a floating point number to the display.
		display.print_float(i)
		# Write the display buffer to the hardware.  This must be called to
		# update the actual display LEDs.
		display.write_display()
		# Delay for a second.
		time.sleep(1.0)
	# Print the same numbers with 1 digit precision.
	for i in numbers:
		display.clear()
		display.print_float(i, decimal_digits=1)
		display.write_display()
		time.sleep(1.0)
	# Print the same numbers with no decimal digits and left justified.
	for i in numbers:
		display.clear()
		display.print_float(i, decimal_digits=0, justify_right=False)
		display.write_display()
		time.sleep(1.0)
	# Run through some hex digits.
	for i in range(0xFF):
		display.clear()
		display.print_hex(i)
		display.write_display()
		time.sleep(0.5)

# Copyright (c) 2014 Adafruit Industries
# Author: Tony DiCola
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import time

from Adafruit_LED_Backpack import SevenSegment


# Create display instance on default I2C address (0x70) and bus number.
display = SevenSegment.SevenSegment()

# Alternatively, create a display with a specific I2C address and/or bus.
# display = SevenSegment.SevenSegment(address=0x74, busnum=1)

# Initialize the display. Must be called once before using the display.
display.begin()

# Run through different number printing examples.
print 'Press Ctrl-C to quit.'
numbers = [0.0, 1.0, -1.0, 0.55, -0.55, 10.23, -10.2, 100.5, -100.5]
while True:
	# Print floating point values with default 2 digit precision.
	for i in numbers:
		# Clear the display buffer.
		display.clear()
		# Print a floating point number to the display.
		display.print_float(i)
		# Write the display buffer to the hardware.  This must be called to
		# update the actual display LEDs.
		display.write_display()
		# Delay for a second.
		time.sleep(1.0)
	# Print the same numbers with 1 digit precision.
	for i in numbers:
		display.clear()
		display.print_float(i, decimal_digits=1)
		display.write_display()
		time.sleep(1.0)
	# Print the same numbers with no decimal digits and left justified.
	for i in numbers:
		display.clear()
		display.print_float(i, decimal_digits=0, justify_right=False)
		display.write_display()
		time.sleep(1.0)
	# Run through some hex digits.
	for i in range(0xFF):
		display.clear()
		display.print_hex(i)
		display.write_display()
		time.sleep(0.5)

Update sevensegment_test.py