Python Workshop Lesson 4 added.

Author: Ebad8931

04_average_of_10_random_numbers.py

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+from statistics import mean as avg
+import random as r
+
+numbers = []
+for _ in range(10):
+    numbers.append(r.randint(1, 50))
+
+print(numbers)
+print(avg(numbers))

04_functions.py

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+from random import randint
+
+# Previous Examples of functions
+print('Hello world')
+range(5, 17, 2)
+len('python')
+
+
+# defining a function
+def hello():
+    print('hello world')
+
+
+# calling the function
+hello()
+
+
+def add(num1, num2):    # num1 and num 2 are arguments
+    return num1 + num2  # result is returned
+
+
+# Function Calling
+total = add(7, 9)
+print(total)
+
+
+def add_numbers(*args):
+    total = 0
+    for num in args:
+        total += num
+    return total
+
+
+print(add_numbers(5, 6, 8, 4, 2))
+print(add_numbers(234, 543))
+print(add_numbers(34, 56, 78, 5, 5.67, 2.45, 5*4))
+
+
+def cool_function(a, b=4, c=10):
+    # b and c are default value arguments
+    print('a is', a, 'b is', b, 'c is', c)
+
+
+cool_function(38, 49)      # a&b are passed c takes its default value
+cool_function(54, c=74)    # c is keyword argument, b is default argument
+cool_function(c=72, a=23)  # a&c are keyword arguments, b is default argument
+
+data = [45, 35, 67]  # a = data[0], b = data[1], c = data[2]
+cool_function(*data)       # * unpacks the list and passes it to the function
+
+# random.randint(a,b) generates a random number N such that a <= N <= b
+print(randint(1, 10))
+print(randint(1, 10))

04_time_conversion.py

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+# Getting input
+time12 = input("Enter time in hh:mm:ssAM or hh:mm:ssPM ")
+# time12 and time24 have common minutes and seconds [:mm:ss]
+time24 = time12[2:8]
+# str12 format: hh:mm:ssAM or hh:mm:ssPM
+am_or_pm = time12[8]
+# Slicing hours
+hour = time12[0:2]
+
+if am_or_pm == 'A':
+    # for str12 01:00AM to 11:59AM
+    if hour != '12':
+        time24 = hour + time24
+    # for str12 12:00AM to 12:59AM
+    else:
+        time24 = "00" + time24
+else:
+    # for str12 01:00PM to 11:59PM
+    if hour != '12':
+        hr = int(hour) + 12
+        time24 = str(hr) + time24
+    # for str12 12:00PM to 12:59PM
+    else:
+        time24 = hour + time24
+
+print('Time in 24-hour clock format:', time24)

04_time_conversion_function.py

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+# Problem Link - https://www.hackerrank.com/challenges/time-conversion/problem
+
+
+def time_conversion(time12):
+    time24 = time12[2:8]
+    am_or_pm = time12[8]
+    hour = time12[0:2]
+
+    if am_or_pm == 'A':
+        if hour != '12':
+            time24 = hour + time24
+        else:
+            time24 = "00" + time24
+    else:
+        if hour != '12':
+            hr = int(hour) + 12
+            time24 = str(hr) + time24
+        else:
+            time24 = hour + time24
+    return time24
+
+
+print(time_conversion('07:05:45AM'))
+print(time_conversion('12:05:45AM'))
+print(time_conversion('07:05:45PM'))
+print(time_conversion('12:05:45PM'))