course_2_assessment_3.py

# 1. The dictionary Junior shows a schedule for a junior year semester.
# The key is the course name and the value is the number of credits.
# Find the total number of credits taken this semester and assign it to the variable credits.
# Do not hardcode this – use dictionary accumulation!

Junior = {'SI 206':4, 'SI 310':4, 'BL 300':3, 'TO 313':3, 'BCOM 350':1, 'MO 300':3}
credits = 0
for v in Junior.values():
    credits += v
    print(credits)
    
# 2. Create a dictionary, freq, that displays each character in string str1 as the key and its frequency as the value.

from collections import Counter

str1 = "peter piper picked a peck of pickled peppers"
freq = Counter(str1)

for i in str1:
    print(i, freq[i])
    
# 3. Provided is a string saved to the variable name s1.
# Create a dictionary named counts that contains each letter in s1 and the number of times it occurs.

s1 = "hello"

def char_frequency(s1):
    dict = {}
    for n in s1:
        keys = dict.keys()
        if n in keys:
            dict[n] += 1
        else:
            dict[n] = 1
    return dict

counts = char_frequency(s1)
print(counts)

# 4. Create a dictionary, freq_words, that displays each word in string str1 as the key and its frequency as the value.

str1 = "I wish I wish with all my heart to fly with dragons in a land apart"

def word_count(str):
    counts = dict()
    words = str.split()

    for word in words:
        if word in counts:
            counts[word] += 1
        else:
            counts[word] = 1

    return counts

freq_words = word_count(str1)
print(freq_words)

# 5. Create a dictionary called wrd_d from the string sent,
# so that the key is a word and the value is how many times you have seen that word.

sent = "Singing in the rain and playing in the rain are two entirely different situations but both can be good"

def word_count(str):
    counts = dict()
    words = str.split()

    for word in words:
        if word in counts:
            counts[word] += 1
        else:
            counts[word] = 1

    return counts

wrd_d  = word_count(sent)
print(wrd_d)

# 6. Create the dictionary characters that shows each character from the string sally and its frequency.
# Then, find the most frequent letter based on the dictionary. Assign this letter to the variable best_char.

sally = "sally sells sea shells by the sea shore"
characters = {}
for i in sally:
    characters[i]=characters.get(i,0)+1
    
sorted(characters.items(), key=lambda x: x[1])
best_char = sorted(characters.items(), key=lambda x: x[1])[-1][0]

# 7. Do the same as above but now find the least frequent letter.
# Create the dictionary characters that shows each character from string sally and its frequency.
# Then, find the least frequent letter in the string and assign the letter to the variable worst_char.

sally = "sally sells sea shells by the sea shore and by the road"

characters = {}
for i in sally:
    characters[i]=characters.get(i,0)+1
    
sorted(characters.items(), key=lambda x: x[1])
worst_char = sorted(characters.items(), key=lambda x: x[1])[-13][0]

# 9. Create a dictionary called low_d that keeps track of all the characters in the string p
# and notes how many times each character was seen. Make sure that there are no repeats of characters as keys,
# such that “T” and “t” are both seen as a “t” for example.

import collections
p = p = "Summer is a great time to go outside. You have to be careful of the sun though because of the heat."
low_d  = collections.defaultdict(int)

for c in p:
    low_d[c] += 1
        
for c in sorted(low_d, key=low_d.get, reverse=True):
    if low_d[c] > 1:
        print('%s %d' % (c, low_d[c]))

6. Create the dictionary characters that shows each character from the string sally and its frequency.
   Then, find the most frequent letter based on the dictionary. Assign this letter to the variable best_char.

sally = "sally sells sea shells by the sea shore"

characters = {}

for char in sally:
    characters[char] = characters.get(char, 0) + 1
    
best_char = None

for char in characters:
    if best_char is None or characters[best_char] < characters[char]:
        best_char = char
        
print(best_char)

If you want to use sorted and lambda functions instead of for loop you can do it like following:

sally = "sally sells sea shells by the sea shore"

characters = {}

for char in sally:
    characters[char] = characters.get(char, 0) + 1
    
best_char = sorted(characters, key=lambda k: characters[k])[-1]
print(best_char)

Can someone help with this coding please, not sure how to start? Thanks

Part 1:
Your job for this lab is to read in a paragraph from user input and create a dictionary using it. The keys for the dictionary will be the words. The values will be the positions of the words. If a word has a period, comma, exclamation mark, or question mark, you must split the string into the word and the character. You can assume that punctuation will only appear at the end of a word followed by a space or the end of the message.

Hint - You may want to make different lists for each type of change you want to make to the message.

Part 2:
You must then print out the list of words with the positions of each. You MUST use the print function provided.

For the input message:
Your job for this lab is to read in a paragraph from user input and create a dictionary utilizing it. The keys for the dictionary will be the words.

Part 3:
Using the dictionary, you must recreate the paragraph and print it out. Hint: Creating a reverse look up function and reusing it for each position number will make this far easier. Leave extra spacing between any punctuation (. , ! ?) and the preceding word.

The input message:
Your job for this lab is to read in a paragraph from user input and create a dictionary using it. The keys for the dictionary will be the words.

str1 = "I wish I wish with all my heart to fly with dragons in a land apart"
freq_words = {}
for i in str1.split():
if i not in freq_words:
freq_words[i]=0
freq_words[i]+=1
print(freq_words)

please help

Create a dictionary, freq, that displays each character in string str1 as the key and its frequency as the value.
str1 = "peter piper picked a peck of pickled peppers"

help #8

help #9