efficient python

Author: ptyadana

10.Python Code Challenges/Level_01/create_largest_possible_number.py

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+import numpy as np
+
+def get_largest(lst):
+        lst = np.array(lst)
+        return lst.argsort()[-3:][::-1]
+    
+    
+if __name__ == "__main__":
+    lst = [1,2,3,4,5,8,3,4]
+    print(get_largest(lst))

10.Python Code Challenges/Level_01/is_armstrong_number.py

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+def is_armstrong_number(num):
+    original_num = num
+    total = 0
+    remainder = num % 10
+    
+    while remainder != 0:
+        total += remainder ** 3
+        num = num // 10
+        remainder = num % 10
+    
+    return total == original_num
+
+
+
+if __name__ == "__main__":
+    print(is_armstrong_number(371))
+    print(is_armstrong_number(123))
+    print(is_armstrong_number(153))

11.Learning Python - JM/enumerate.py

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+names = ['Jerry', 'Kramer', 'Elaine', 'George', 'Newman']
+
+# Rewrite the for loop to use enumerate
+indexed_names = []
+for i,name in enumerate(names):
+    index_name = (i,name)
+    indexed_names.append(index_name[1]) 
+print(indexed_names)
+
+# Rewrite the above for loop using list comprehension
+indexed_names_comp = [(i,name) for i,name in enumerate(names)]
+print(indexed_names_comp)
+
+# Unpack an enumerate object with a starting index of one
+indexed_names_unpack = [*enumerate(names, start=1)]
+print(indexed_names_unpack)

11.Learning Python - JM/map.py

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+names = ['Jerry', 'Kramer', 'Elaine', 'George', 'Newman']
+
+# Use map to apply str.upper to each element in names
+names_map  = map(str.upper, names)
+
+# Print the type of the names_map
+print(type(names_map))
+
+# Unpack names_map into a list
+names_uppercase = [item for item in names_map]
+
+# Print the list created above
+print(names_uppercase)

11.Learning Python - JM/party.py

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+import numpy as np
+
+
+def welcome_guest(guest):
+    print(guest)
+
+
+
+names = ['Jerry', 'Kramer', 'Elaine', 'George', 'Newman']
+
+# Create a list of arrival times
+arrival_times = [*range(10,60,10)]
+
+# Convert arrival_times to an array and update the times
+arrival_times_np = np.array(arrival_times)
+new_times = arrival_times_np - 3
+
+# Use list comprehension and enumerate to pair guests to new times
+guest_arrivals = [(names[i],time) for i,time in enumerate(new_times)]
+
+#Map the welcome_guest function to each (guest,time) pair
+welcome_map = map(welcome_guest, guest_arrivals)
+
+# guest_welcomes = [*welcome_map]
+# print(*guest_welcomes, sep='\n')

11.Learning Python - JM/range.py

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+# Create a range object that goes from 0 to 5
+nums = range(6)
+print(type(nums))
+
+# Convert nums to a list
+nums_list = list(nums)
+print(nums_list)
+
+# Create a new list of odd numbers from 1 to 11 by unpacking a range object
+nums_list2 = [*range(1,12,2)]
+print(nums_list2)

11.Learning Python - JM/using_timeit.py

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+import numpy as np
+
+# Create a list of integers (0-50) using list comprehension
+nums_list_comp = [num for num in range(51)]
+print(nums_list_comp)
+
+# Create a list of integers (0-50) by unpacking range
+nums_unpack = [*range(51)]
+print(nums_unpack)