CSCI 1100 - 作业2 - 字符串和函数

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>>> 'methane'.replace('e','9(*9(')
'm9(*9(than9(*9('
>>> 'm9(*9(than9(*9('.replace('an','-?')
'm9(*9(th-?9(*9('
>>> 'm9(*9(th-?9(*9('.replace('th','!@+3')
'm9(*9(!@+3-?9(*9('
>>> 'm9(*9(!@+3-?9(*9('.replace('9', '2')
'm2(*2(!@+3-?2(*2('

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>>> number_happy("I laughed and laughed at her excellent joke.")
3

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>>> number_happy(" Happiness is the state of a student who started homework early. ")
1

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>>> number_sad("Dr. Horrible's Sing-Along Blog is an excellent show.")
1
>>> number_sad("Alexander and the Terrible, Horrible, No Good, Very Bad Day")
3

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import math

#Functions

def find_volume_sphere(radius):
    """Calculates the volume of a sphere with a given radius"""
    return (4/3) * math.pi * radius**3

def find_volume_cube(side):
    """Calculates the volume of a cube with a given side length"""
    return side**3

#Input

radius = str(input("Enter the gum ball radius (in.) => ").strip())
print(radius)
weekly_sales = str(input("Enter the weekly sales => ").strip())
print(weekly_sales, "\n")

#Calculations

target_sales = math.ceil(float(weekly_sales) * 1.25)

edge_gumballs = math.ceil(target_sales**(1/3))
edge_length = edge_gumballs * float(radius)*2
edge_gumballs_max = edge_length / (float(radius)*2 + 0.0000000000000001)
#Aviod ZeroDivisionError by adding a small number to the radius

number_extra_gumballs = math.ceil(edge_gumballs_max**3 - target_sales)

volume_gumballs = find_volume_sphere(float(radius))
volume_cube = find_volume_cube(edge_length)
volume_wasted_target = volume_cube - volume_gumballs * target_sales
volume_wasted_full = volume_cube - volume_gumballs * (edge_gumballs_max) ** 3

#Print

print("The machine needs to hold", str(edge_gumballs), "gum balls along each edge.")
print("Total edge length is", "{:.2f}".format(edge_length), "inches.")
print("Target sales were", str(target_sales) + ", but the machine will hold", str(int(number_extra_gumballs)), "extra gum balls.")
print("Wasted space is", "{:.2f}".format(volume_wasted_target), "cubic inches with the target number of gum balls,")
print("or", "{:.2f}".format(volume_wasted_full), "cubic inches if you fill up the machine.")

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user_input = input("Enter a string to encode ==> ").strip()
print(user_input, "\n")

#Replacing
def encrypt(word):
    word = word.replace(" a", "%4%")
    word = word.replace("he", "7!")
    word = word.replace("e", "9(*9(")
    word = word.replace("y", "*%$")
    word = word.replace("u", "@@@")
    word = word.replace("an", "-?")
    word = word.replace("th", "!@+3")
    word = word.replace("o", "7654")
    word = word.replace("9", "2")
    word = word.replace("ck", "%4")
    return word

#Calculation

length_difference = abs(len(user_input) - len(encrypt(user_input)))

#Decoding

def decrypt(word):
    word = word.replace("%4", "ck")
    word = word.replace("2", "9")
    word = word.replace("7654", "o")
    word = word.replace("!@+3", "th")
    word = word.replace("-?", "an")
    word = word.replace("@@@", "u")
    word = word.replace("*%$", "y")
    word = word.replace("9(*9(", "e")
    word = word.replace("7!", "he")
    word = word.replace("%4%", " a")
    return word

#Printing

print("Encrypted as ==>", encrypt(user_input))
print("Difference in length ==>", str(length_difference))
print("Deciphered as ==>", decrypt(encrypt(user_input)))

if user_input == decrypt(encrypt(user_input)):
    print("Operation is reversible on the string.")
else:
    print("Operation is not reversible on the string.")

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def number_happy(sentence):
    happy_words = ["laugh", "happiness", "love", "excellent", "good", "smile"]
    sentence = sentence.lower()
    #sentence = sentence.strip()
    #sentence = sentence.split()
    count = 0
    for word in happy_words:
        count += sentence.count(word)
    return count

def number_sad(sentence):
    sad_words = ["bad", "sad", "terrible", "horrible", "problem", "hate"]
    sentence = sentence.lower()
    #sentence = sentence.strip()
    #sentence = sentence.split()
    count = 0
    for word in sad_words:
        count += sentence.count(word)
    return count

#Get user input

#sentence = "I laughed and laughed at her excellent joke."
sentence = input("Enter a sentence => ").strip()

#Print

#print(number_happy(sentence))
print(sentence)
print("Sentiment: " + ("+" * number_happy(sentence)) + ("-" * number_sad(sentence)))

if number_happy(sentence) > number_sad(sentence):
    print("This is a happy sentence.")
elif number_happy(sentence) == number_sad(sentence):
    print("This is a neutral sentence.")
else:
    print("This is a sad sentence.")