list comprehensions

Author: msraju2009

comprehension_practise.py

@@ -0,0 +1,52 @@
+# import collections
+#
+# l1 = [10, 20, 30, 40, 50]
+# l2 = [10, 20, 30, 50, 40, 70]
+# l3 = [10, 20, 50, 40, 30]
+# # Counter() function counts the frequency of the items in a list
+# # and stores the data as a dictionary in the format <value>:<frequency>
+# print(collections.Counter(l1)) # Counter({10: 1, 20: 1, 30: 1, 40: 1, 50: 1})
+# print(collections.Counter(l2)) # Counter({10: 1, 20: 1, 30: 1, 50: 1, 40: 1, 70: 1})
+# print(collections.Counter(l1) == collections.Counter(l2)) # False
+# # True , even if order is not same also matches
+# print(collections.Counter(l1) == collections.Counter(l3))
+# print(set(l1)) #{40, 10, 50, 20, 30}
+# print(set(l3)) # {40, 10, 50, 20, 30}
+# l1.sort()
+# l3.sort()
+# print(l1 == l3) #True
+#
+# l1 = [10, 20, 30, 40, 50]
+# l3 = [50, 10, 30, 20, 40]
+# a=set(l1)
+# b=set(l3)
+# print(a,b)
+# print(a==b)
+#
+#
+# l1 = [-10, -20, 30, 40, 50]
+# l3 = [50, 75, 30, 20, 40, 69]
+# res = [x for x in l1+l3 if x not in l1 or x not in l3]
+# print(res)
+# new_list= []
+# for item in l1:
+#     pos = abs(item)
+#     new_list.append(pos)
+# print(new_list)
+
+# x = set(['x1','rr','x3','y4'])
+# y = set(['x1','rr','rr','y4'])
+#
+# print ("List first: " + str(x))
+# print ("List second: " + str(y))
+#
+# # take difference of two lists
+# z = x.difference(y)
+#
+# print("Difference of first and second String: " + str(z))
+#
+# number_list = [x for x in range(100) if x%3 == 0 if x%5 == 0]
+# print(number_list)
+
+my_list = ['91 9925479326', '18002561245', 'All the best', 'good']
+print([i for i in my_list if not i.startswith(('91', '18'))])  # ['All the best', 'good']

dictionaries_practise.py

@@ -187,14 +187,29 @@
 # for k,v in Liverpool.items():
 #     print(v.keys())
 
-with open('employees.json') as ip:
+# with open('employees.json') as ip:
+#     op = json.load(ip)
+#
+# for ele in op:
+#     data = op['data']
+#     for k in data:
+#         employee_name = k['employee_name']
+#         employee_age = k['employee_age']
+#         profile_image = k['profile_image']
+#         if profile_image is not None:  # get employees who doesnt not have profile image
+#             print("Employee {} doesnt have image ".format(employee_name))
+
+# iterate through list of dictionaries
+with open('mockaroo-user-data.json') as ip:
     op = json.load(ip)
 
 for ele in op:
-    data = op['data']
-    for k in data:
-        employee_name = k['employee_name']
-        employee_age = k['employee_age']
-        profile_image = k['profile_image']
-        if profile_image is not None:  # get employees who doesnt not have profile image
-            print("Employee {} doesnt have image ".format(employee_name))
+    # store each key details in a variable
+    first_name = ele['first_name']
+    gender = ele['gender']
+    last_name = ele['last_name']
+    ip_address = ele['ip_address']
+    print("Name is {} and IP address is {} ".format(first_name + last_name, ip_address))
+# import os
+# dir_path = os.path.dirname(os.path.abspath(__file__))
+# print(dir_path)