Method information can be found here.
Example: Creating a Polyline
import arcpy
coordList = [[[1,2], [2,4], [3,7]],
[[6,8], [5,7], [7,2], [9,5]]]
# Create empty Point and Array objects
#
point = arcpy.Point()
array = arcpy.Array()
# A list that will hold each of the Polyline objects
#
featureList = []
for feature in coordList:
# For each coordinate pair, set the x,y properties and add to the
# Array object.
#
for coordPair in feature:
point.X = coordPair[0]
point.Y = coordPair[1]
array.add(point)
# Create a Polyline object based on the array of points
#
polyline = arcpy.Polyline(array)
# Clear the array for future use
#
array.removeAll()
# Append to the list of Polyline objects
#
featureList.append(polyline)
# Create a copy of the Polyline objects, by using featureList as input to
# the CopyFeatures tool.
#
arcpy.CopyFeatures_management(featureList, "c:/geometry/polylines.shp")