def create_temp_data_set(LLQ,
ds_type="SEQ",
size="5M",
ds_format="FB",
lrecl=80):
"""Creates a temporary data set with the given low level qualifier.
Arguments:
LLQ {str} -- Low Level Qualifier to be used for temporary data set
ds_type {str} -- The data set type, default: Sequential
size {str} -- The size of the data set, default: 5M
format {str} -- The record format of the data set, default: FB
lrecl {int} -- The record length of the data set, default: 80
Returns:
str -- Name of the created data set
Raises:
OSError: When non-zero return code is received
from Datasets.create()
"""
chars = ascii_uppercase
HLQ2 = ''.join(choice(chars) for i in range(5))
HLQ3 = ''.join(choice(chars) for i in range(6))
temp_ds_name = "{0}.{1}.{2}.{3}".format(Datasets.hlq(), HLQ2, HLQ3,
LLQ)
rc = Datasets.create(temp_ds_name, ds_type, size, ds_format, "", lrecl)
if rc != 0:
raise OSError("Unable to create temporary data set")
return temp_ds_name
def _create_data_set(name, extra_args=None):
"""A wrapper around zoautil_py
Dataset.create() to raise exceptions on failure.
Arguments:
name {str} -- The name of the data set to create.
Raises:
DatasetCreateError: When data set creation fails.
"""
if extra_args is None:
extra_args = {}
rc = Datasets.create(name, **extra_args)
if rc > 0:
raise DatasetCreateError(name, rc)
return
def temp_data_set(self, reclen, space_u):
"""Creates a temporary data set with the given record length and size
Arguments:
size {str} -- The size of the data set
lrecl {int} -- The record length of the data set
Returns:
str -- Name of the allocated data set
Raises:
OSError: When any exception is raised during the data set allocation
"""
size = str(space_u * 2) + "K"
hlq = Datasets.hlq()
temp_ps = Datasets.temp_name(hlq)
rc = Datasets.create(temp_ps, "SEQ", size, "VB", "", reclen)
if rc:
raise OSError(
"Failed when allocating temporary sequential data set!")
return temp_ps
def create_data_set(name, extra_args={}):
""" A wrapper around zoautil_py data set create to raise exceptions on failure. """
rc = Datasets.create(name, **extra_args)
if rc > 0:
raise DatasetCreateError(name, rc)
return
from zoautil_py.types import DDStatement
# Import datetime, needed so we can format the report
from datetime import datetime
# Import os, needed to get the environment variables
import os
#Take the contents of this data set and read it into cc_contents
cc_contents = Datasets.read("MTM2020.PUBLIC.CUST16")
USERID = os.getenv("USER")
output_dataset = USERID + ".OUTPUT.CCINVALD"
#Delete the output dataset if it already exists
if Datasets.exists(output_dataset):
Datasets.delete(output_dataset)
Datasets.create(output_dataset, "SEQ")
# Create a new SEQUENTIAL DATA SET with the name of output_dataset
#A function that checks to see if the number passed to it is even. Returns True or False (Boolean)
def is_even(num_to_check
): # this is a function. num_to_check is what gets sent to it
if ((num_to_check %
2) == 0): # a simple check to see if num_to_check is even.
result = True # We set result to True
return result # and then return it.
else: # if it isn't
result = False # set return to False
return result # and return that.
cc_list = cc_contents.splitlines() # take that giant string and turn it into a List
invalid_cc_list = [] # A second list to hold invalid entries
for cc_line in cc_list: # do everything here for every item in that List
cc_digits = int(cc_line[5:21]) # Just grabbing some digits. Not a full CC number (HINT!)
if (luhn(cc_digits)): # If the card number is valid
invalid_cc_list.append(cc_line)
#The Report-Writing Part
#
# NOTE: DON'T USE APPEND FOR MULTIPLE LINES.
# IT WILL BE SLOW
# INSTEAD, THROW EVERYTHING INTO A VARIABLE
# AND WRITE THAT OUT ONCE, LIKE THIS.
#
# TRUST US ON THIS.
#
# YOU SHOULD BE ABLE TO USE THE CODE BELOW, ONLY HAVING TO ADD
# A LINE TO WRITE OUT THE FINAL report_output TO YOUR output_dataset
# REMEMBER, THE REPORT NEEDS TO HAVE THE DATETIME STRING IN IT ABOVE THE DATA
#
now = datetime.now()
dt_string = now.strftime("%d/%m/%Y %H:%M:%S")
report_output = '\n'.join(invalid_cc_list)
report_output = "INVALID CREDIT CARD REPORT FOR " + dt_string + '\n\n' + report_output
print(report_output) # Print it out to the screen.
# When you're ready to write your report out to file, uncomment that last line
Datasets.create("Z09150.OUTPUT.CCINVALD", "SEQ")
Datasets.write("Z09150.OUTPUT.CCINVALD",report_output)
dd_statements = []
dd_statements.append(
DDStatement(ddName="sortin01", dataset="USR.MVSCMD.DFSORT.MASTER"))
dd_statements.append(
DDStatement(ddName="sortin02", dataset="USR.MVSCMD.DFSORT.NEW"))
dd_statements.append(
DDStatement(ddName="sysin", dataset="USR.MVSCMD.DFSORT.CMD"))
dd_statements.append(
DDStatement(ddName="sortout", dataset="USR.MVSCMD.DFSORT.MERGE"))
dd_statements.append(DDStatement(ddName="sysout", dataset="*"))
# Delete datasets if already exist
Datasets.delete("USR.MVSCMD.DFSORT.*")
# Create datasets
Datasets.create("USR.MVSCMD.DFSORT.MASTER", type="SEQ")
Datasets.create("USR.MVSCMD.DFSORT.NEW", type="SEQ")
Datasets.create("USR.MVSCMD.DFSORT.CMD", type="SEQ")
Datasets.create("USR.MVSCMD.DFSORT.MERGE", type="SEQ")
# Write command to USR.MVSCMD.DFSORT.CMD
Datasets.write("USR.MVSCMD.DFSORT.CMD", " MERGE FORMAT=CH,FIELDS=(1,9,A)")
# Write example text to USR.MVSCMD.DFSORT.MASTER
Datasets.write("USR.MVSCMD.DFSORT.MASTER", "Chang Joe 278 232 6043")
Datasets.write("USR.MVSCMD.DFSORT.MASTER",
"DeBeer Jo 348 132 6023",
append=True)
Datasets.write("USR.MVSCMD.DFSORT.MASTER",
"White Belinda 178 222 5043",
append=True)
# Import datetime, needed so we can format the report
from datetime import datetime
# Import os, needed to get the environment variables
import os
#Take the contents of this data set and read it into cc_contents
cc_contents = Datasets.read("MTM2020.PUBLIC.CUST16")
USERID = os.getenv('USER')
output_dataset = USERID + ".OUTPUT.CCINVALD"
#Delete the output dataset if it already exists
if Datasets.exists(output_dataset):
Datasets.delete(output_dataset)
# Use this line to create a new SEQUENTIAL DATA SET with the name of output_dataset
# (hint: https://www.ibm.com/support/knowledgecenter/SSKFYE_1.0.1/python_doc_zoautil/api/datasets.html?view=embed)
Datasets.create(output_dataset, type="SEQ")
def luhn(card_number):
def digits_of(n):
return [int(d) for d in str(n)]
digits = digits_of(card_number)
odd_digits = digits[-1::-2]
even_digits = digits[-2::-2]
checksum = 0
checksum += sum(odd_digits)
for d in even_digits:
checksum += sum(digits_of(d * 2))
return (checksum % 10)
