Uploaded Beginner Code Snippets

Author: CoreyMSchafer

Python-Conditionals/intro.py

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+
+condition = 'Test'
+
+if condition:
+    print('Evaluated to True')
+else:
+    print('Evaluated to False')

Python-Conditionals/snippets.txt

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+
+# Comparisons:
+# Equal:            ==
+# Not Equal:        !=
+# Greater Than:     >
+# Less Than:        <
+# Greater or Equal: >=
+# Less or Equal:    <=
+# Object Identity:  is
+
+
+# False Values:
+    # False
+    # None
+    # Zero of any numeric type
+    # Any empty sequence. For example, '', (), [].
+    # Any empty mapping. For example, {}.
+
+condition = False
+
+if condition:
+    print('Evaluated to True')
+else:
+    print('Evaluated to False')

Python-Dicts/intro.py

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+
+student = {'name': 'John', 'age': 25, 'courses': ['Math', 'CompSci']}
+
+for key, value in student.items():
+    print(key, value)

Python-Functions/intro.py

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+
+# Number of days per month. First value placeholder for indexing purposes.
+month_days = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+
+
+def is_leap(year):
+    """Return True for leap years, False for non-leap years."""
+
+    return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
+
+
+def days_in_month(year, month):
+    """Return number of days in that month in that year."""
+
+    # year 2017
+    # month 2
+    if not 1 <= month <= 12:
+        return 'Invalid Month'
+
+    if month == 2 and is_leap(year):
+        return 29
+
+    return month_days[month]
+
+print(days_in_month(2017, 2))

Python-Functions/snippets.txt

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+
+# Number of days per month. First value placeholder for indexing purposes.
+month_days = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+
+
+def is_leap(year):
+    """Return True for leap years, False for non-leap years."""
+
+    return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
+
+
+def days_in_month(year, month):
+    """Return number of days in that month in that year."""
+
+    if not 1 <= month <= 12:
+        return 'Invalid Month'
+
+    if month == 2 and is_leap(year):
+        return 29
+
+    return month_days[month]

Python-Imports/intro.py

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+
+courses = ['History', 'Math', 'Physics', 'CompSci']

Python-Imports/my_module.py

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+
+print('Imported my_module...')
+
+test = 'Test String'
+
+
+def find_index(to_search, target):
+    '''Find the index of a value in a sequence'''
+    for i, value in enumerate(to_search):
+        if value == target:
+            return i
+
+    return -1

Python-Ints/intro.py

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+
+num_1 = '100'
+num_2 = '200'
+
+num_1 = int(num_1)
+num_2 = int(num_2)
+
+print(num_1 + num_2)

Python-Ints/snippets.txt

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+
+# Arithmetic Operators:
+# Addition:       3 + 2
+# Subtraction:    3 - 2
+# Multiplication: 3 * 2
+# Division:       3 / 2
+# Floor Division: 3 // 2
+# Exponent:       3 ** 2
+# Modulus:        3 % 2
+
+
+# Comparisons:
+# Equal:            3 == 2
+# Not Equal:        3 != 2
+# Greater Than:     3 > 2
+# Less Than:        3 < 2
+# Greater or Equal: 3 >= 2
+# Less or Equal:    3 <= 2

Python-Lists/intro.py

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+
+# Empty Lists
+empty_list = []
+empty_list = list()
+
+# Empty Tuples
+empty_tuple = ()
+empty_tuple = tuple()
+
+# Empty Sets
+empty_set = {} # This isn't right! It's a dict
+empty_set = set()

Python-Lists/snippets.txt

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+
+
+# Mutable
+list_1 = ['History', 'Math', 'Physics', 'CompSci']
+list_2 = list_1
+
+print(list_1)
+print(list_2)
+
+# list_1[0] = 'Art'
+
+# print(list_1)
+# print(list_2)
+
+
+# Immutable
+# tuple_1 = ('History', 'Math', 'Physics', 'CompSci')
+# tuple_2 = tuple_1
+
+# print(tuple_1)
+# print(tuple_2)
+
+# tuple_1[0] = 'Art'
+
+# print(tuple_1)
+# print(tuple_2)
+
+# Sets
+cs_courses = {'History', 'Math', 'Physics', 'CompSci'}
+
+print(cs_courses)
+
+
+# Empty Lists
+empty_list = []
+empty_list = list()
+
+# Empty Tuples
+empty_tuple = ()
+empty_tuple = tuple()
+
+# Empty Sets
+empty_set = {} # This isn't right! It's a dict
+empty_set = set()

Python-Loops/intro.py

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+
+x = 0
+
+while True:
+    # if x == 5:
+    #     break
+    print(x)
+    x += 1

Python-Strings/intro.py

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+
+greeting = 'Hello'
+name = 'Michael'
+
+print(help(str.lower))