feat(hmwk): fundementals part 1 homework

school/a-level/homework/fundementals/einstein.py

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+c = 299792458
+
+while True:
+	try:
+		m = int(input('Please enter an integer mass in kg: '))
+		break
+	except ValueError:
+		print('Please ensure that your input was an integer!')
+
+e = m * (c ** 2)
+print(f'e = {e:,}J')

school/a-level/homework/fundementals/indoor voice.py

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+text = input('Please enter some text: ')
+text = text.lower()
+print(text)

school/a-level/homework/fundementals/making faces.py

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+mapping = {
+	':)': '🙂',
+	':(': '🙁'
+}
+
+text = input('Please enter some text: ')
+
+for emoticon in mapping.keys():
+	text = text.replace(emoticon, mapping[emoticon])
+
+print(text)

school/a-level/homework/fundementals/playback speed.py

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+text = input('Please enter some text: ')
+text = text.replace(' ', '...')
+print(text)

school/a-level/homework/fundementals/tip calculator.py

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+while True:
+	try:
+		pounds = input('How much was the meal? ')
+
+		pounds = pounds.split('£')
+		pounds = pounds[len(pounds) - 1]
+		pounds = float(pounds)
+
+		break
+	except ValueError:
+		print('Please ensure that you input a valid amount of money!')
+
+while True:
+	try:
+		percentage = input('What percentage would you like to tip? ')
+
+		percentage = percentage.split('%')[0]
+		percentage = float(percentage) / 100
+
+		break
+	except ValueError:
+		print('Please ensure that you enter a valid percentage!')
+
+tip = round(pounds * percentage, 2)
+print(f'You should tip £{tip}!')