Python Sample Code

Function Description

Collect statistics on female netizens who dwell on online shopping for more than 2 hours on the weekend.

Sample Code

The following code snippets are used as an example. For complete codes, see collectFemaleInfo.py.

def contains(str, substr):
  if substr in str:
    return True
  return False

if __name__ == "__main__":
  if len(sys.argv) < 2:
    print "Usage: CollectFemaleInfo <file>"
    exit(-1)

  # Create SparkContext and set AppName.
  sc = SparkContext(appName = "CollectFemaleInfo")?

  """
The following programs are used to implement the following functions:
  //1. Read data. The input parameter argv[1] specifies the data path. - textFile
  2. Filter data information of the time that female netizens spend online. - filter
  3. Summarize the total time that each female netizen spends online. -map/map/reduceByKey.
  4. Filter the information of female netizens who spend more than 2 hours online. - filter
  """
  inputPath = sys.argv[1]
  result = sc.textFile(name = inputPath, use_unicode = False) \
    .filter(lambda line: contains(line, "female")) \
    .map(lambda line: line.split(',')) \
    .map(lambda dataArr: (dataArr[0], int(dataArr[2]))) \
    .reduceByKey(lambda v1, v2: v1 + v2) \
    .filter(lambda tupleVal: tupleVal[1] > 120) \
    .collect()
  for (k, v) in result:
    print k + "," + str(v)

  # Stop SparkContext.
  sc.stop()