CDO

Hello,
I'm working on a project where I am modelling the effect of climate change on diurnal spring temperatures. I'd like to use several CDO operators in a python script. I have use the "pip install cdo" in the WinPython command window and the installation was successful. But my script fails when it tries to execute a CDO operator. At first I thought it might be that the "gec,#" and "lec,#" operators were not included. So I tried to get a help file using the example provided on the Ruby, Python page. Again I got the same error message so I tried copying the example provided on the Ruby, Python page:

from cdo import Cdo    #note when I tried from cdo import * it didn't work and I found replacing * with CDO  given on this page avoided the error "https://www.mi.uni-hamburg.de/en/arbeitsgruppen/strahlung-und-fernerkundung/intern/howtos/cdo.html" 
cdo=Cdo()   
help(cdo.sinfo)

This is an example of the error messages I'm getting:
"C:\WinPython64\WinPython-64bit-3.4.4.6Qt5\python-3.4.4.amd64\lib\site-packages\cdo.py", line 257, in __getattr__ raise AttributeError("Unknown method '" + method_name +"'!")

AttributeError: Unknown method 'sinfo'!

This is my script:

#**************************
# Access standard libraries
#**************************
from cdo import Cdo
import os

#***************************************
# Set user-defined environment variables
#***************************************

# Set the input/output directories
wrkDir = 'C:/Netcfd/BCSD'
Minifile = wrkDir + '/tasmin'
Minofile = wrkDir + '/tasmin/Sap'

Maxifile = wrkDir + '/tasmax'
Maxofile = wrkDir + '/tasmax/Sap'

#***********************
# Process input datasets
#***********************

inList = os.listdir(Minifile)  # List all the files in the 'tasmin' directory
print(inList)

for fileName in inList:     # Step through each file
    ifile = fileName
    baseName, extension = os.path.splitext(ifile)
    if extension == '.nc':
        #create ofile named according to input file
        ofile = Minofile + ifile + '_sap.nc'
        #Call cdo

        cdo=Cdo()
        # when tasmin is less than or equal to -1 a value of one is written to
        # the output file everythiong else is given a 0 using cdo lec,-1
        cdo.lec,-1(input = ifile, out=ofile, options = '-a, -f nc4c') 

inList = os.listdir(Maxifile)  # List all the files in the 'tasmax' directory
for fileName in inList:     # Step through each input file
    ifile = fileName
    baseName, extension = os.path.splitext(ifile)
    if extension == '.nc':
        #create ofile named according to input file
        ofile = Maxofile + fileName + '_sap.nc'
        #Call cdo

        cdo=Cdo()
        # when tasmax is greater than or equal to 2.2 a value of one is written 
        # to the output file everythiong else is given a 0 using cdo gec,2.2
        cdo.gec,2.2(input = ifile, output= ofile, options = '-a, -f nc4c')         

print ("All done!!")

This is the console output:

runfile('C:/Netcfd/Saptemp1.py', wdir='C:/Netcfd')
['Sap', 'tasmin_26_20.nc', 'tasmin_26_50.nc', 'tasmin_26_80.nc', 'tasmin_26_90.nc', 'tasmin_45_20.nc', 'tasmin_45_50.nc', 'tasmin_45_80.nc', 'tasmin_45_90.nc', 'tasmin_85_20.nc', 'tasmin_85_50.nc', 'tasmin_85_80.nc', 'tasmin_85_90.nc']
Traceback (most recent call last):

  File "<ipython-input-29-44facb0e92fa>", line 1, in <module>
    runfile('C:/Netcfd/Saptemp1.py', wdir='C:/Netcfd')

  File "C:\WinPython64\WinPython-64bit-3.4.4.6Qt5\python-3.4.4.amd64\lib\site-packages\spyder\utils\site\sitecustomize.py", line 866, in runfile
    execfile(filename, namespace)

  File "C:\WinPython64\WinPython-64bit-3.4.4.6Qt5\python-3.4.4.amd64\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
    exec(compile(f.read(), filename, 'exec'), namespace)

  File "C:/Netcfd/Saptemp1.py", line 59, in <module>
    cdo.lec,-1(input = ifile, out=ofile, options = '-a, -f nc4c')

  File "C:\WinPython64\WinPython-64bit-3.4.4.6Qt5\python-3.4.4.amd64\lib\site-packages\cdo.py", line 257, in __getattr__
    raise AttributeError("Unknown method '" + method_name +"'!")

AttributeError: Unknown method 'lec'!

Can anyone help me to get this running?
If I can get this going I want to continue with another script calling on the mul operator, then use the splityear operator, and then the consecsum operator.
Thank you for your time,
Laura