Raspberry pi 3 issues with BMP180

Recently I connected BMP180 BARO to Arduino and it worked fine. I tried to connect it to Raspberry pi 3 and I got whole bunch of errors. I tried to use those libraries:

https://github.com/xtacocorex/Adafruit_Python_GPIO

https://github.com/adafruit/Adafruit_Python_BMP

I was using multiple samples but still following errors were occuring:

pi@raspberrypi:~/pi $ python BMP180.py
Traceback (most recent call last):
  File "BMP180.py", line 3, in <module>
    sensor = BMP085.BMP085(busnum=2)
  File "build/bdist.linux-armv7l/egg/Adafruit_BMP/BMP085.py", line 67, in __init__
  File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 65, in get_i2c_device
  File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 98, in __init__
  File "build/bdist.linux-armv7l/egg/Adafruit_PureIO/smbus.py", line 97, in __init__
  File "build/bdist.linux-armv7l/egg/Adafruit_PureIO/smbus.py", line 122, in open
IOError: [Errno 2] No such file or directory: '/dev/i2c-2'

Or:

Traceback (most recent call last):
  File "B180.py", line 24, in <module>
    print('Pressure = {0:0.2f} Pa'.format(sensor.read_pressure()))
  File "build/bdist.linux-armv7l/egg/Adafruit_BMP/BMP085.py", line 152, in read_pressure
  File "build/bdist.linux-armv7l/egg/Adafruit_BMP/BMP085.py", line 129, in read_raw_pressure
  File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 149, in readU8
  File "build/bdist.linux-armv7l/egg/Adafruit_PureIO/smbus.py", line 155, in read_byte_data

Or this:

pi@raspberrypi:~/pi $ python bMP180.py 

Traceback (most recent call last):

  File "bMP180.py", line 1, in <module>

    from tentacle_pi.BMP180 import BMP180

ImportError: /usr/local/lib/python2.7/dist-packages/tentacle_pi/BMP180.so: undefined symbol: i2c_smbus_write_byte_data

I finally figured out that in sensor definition brackets were required. So below code is working now.

import Adafruit_BMP.BMP085 as BMP085

sensor = BMP085.BMP085()

print('Temp = {0:0.2f} *C'.format(sensor.read_temperature()))

print('Pressure = {0:0.2f} Pa'.format(sensor.read_pressure()))

print('Altitude = {0:0.2f} m'.format(sensor.read_altitude()))

print('Sealevel Pressure = {0:0.2f} Pa'.format(sensor.read_sealevel_pressure()))

Adding brackets fixed code of every other sample that I used before.