Questions tagged [pset6]
The problem set for Week 7
855
questions
0
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1answer
33 views
Pset 6 - Dna - My outputs are slightly incorrect. Could someone help me figure out what might be the problem here?
I've been stuck on this question for a week. After countless hours of debugs, I decided to post it here. Please refer to images and code snippets below and kindly explain to me what might be the ...
1
vote
1answer
43 views
Minor change in pset6/dna required, need some help or hint
I am really really close to completing pset/dna.
But there seems to be some problem in the 'if statement'. Somebody please guide.
Before the line of underscores in the terminal, I have printed the ...
0
votes
1answer
39 views
pset6 DNA // having problem comparing elements from the database and the sequence file
Hi there I am having an issue comparing the data I have extracted from the sequence and the database files for now I am doing a sort of in efficient way but later I will fix it I am not sure really ...
0
votes
1answer
31 views
PSET6 DNA Almost done - matching not working correctly
I have been stuck with last part of the code that is supposed to match the DNA sequence from sequence.txt with the one in database.csv.
It passes most of the tests in check50 and fails only in ...
0
votes
1answer
34 views
PSET6 DNA Think I'm getting an infinite loop which is apparent when testing with every txt file after 4.txt
Hi all I'm having trouble for PSET6 DNA. My code works fine for everything up until and including 4.txt but whenever I go to check the large.csv file and thus 5.txt, 6.txt, 7.txt and so on I seem to ...
0
votes
1answer
14 views
Imprecision during float subtraction in python
During pset6/cash, I tried to write the python code without multiplying change by 100 to get cents (as I had in c).
I had assumed that this wouldn't lead to any precision issues, however when ...
0
votes
1answer
42 views
pset6 DNA works with small database but not with the large one
For some reason, when counting the times a substring repeats within a string (a STR in a DNA), my code fails with the large database. It is not a matter of overlapping sequences, because the numbers ...
0
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1answer
38 views
pset6 - DNA - works for small.csv but not large.csv
import csv
import sys
with open(sys.argv[1], 'r') as file:
# stores data from small.csv in both dict and list form
dna_names_dict = csv.DictReader(file)
...
0
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1answer
15 views
get_string function not working on pset6 2020
here is the problem
~/ $ python hello.py
Traceback (most recent call last):
File "/home/ubuntu/hello.py", line 1, in <module>
answer = Get_string("what is your name")
...
0
votes
1answer
36 views
Mario (less) PSET6 Python Spacing help
Slightly embarrassed to be posting this as I could succesfully complete mario(less) in pset1 but apparently cannot replicate it in Python. My code is as follows:
h = int(input("h: ")) # get ...
0
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1answer
18 views
pset6 mario more - there is a extra line in my output how do i get rid of it
o = input("Height: ")
if int(o) > 8 or int(o) <= 0:
o = input("Height: ",end = "")
i = int(o)
for j in range (i + 1):
# calculating number of spaces
n ...
0
votes
1answer
19 views
Index to integer
How do i convert an index to an integer?
I tried int(index), that didnt work.
For example;
S = [a,b,c,d]
For index in S:
n = int(index)
print (n)
break
print ()
0
votes
1answer
22 views
Pset6 Readability wrong Grade [duplicate]
Adjusted code to see how many letters, sentences and words counted. Noticed word count is lesser by one
from cs50 import get_string
text = get_string("Text: ")
letter = 0
word = 0
...
0
votes
0answers
82 views
pset6 dna question regarding searching string for substring, two types of code give different output
I am currently following along ayoutube tutorial for pset 6 DNA, and have a small question regarding a specific function. In this function, it basically takes a substring and a string, and counts the ...
0
votes
1answer
34 views
pset6 credit help with calculations in python
I am trying to convert my credit solution from C to python, but for some reason it is not working. Attached is my code and the problems
from cs50 import get_int
card, a, m, v = False, False, False, ...
0
votes
1answer
79 views
Getting ONE error on check50 for DNA - ValueError: max() arg is an empty sequence - Where is the bug?
I'm so close the finish line, but I get error on one out of the 21 CS50 tests.
The test that is generating the error is number #2, which is:
python dna.py databases/small.csv sequences/2.txt
And I ...
0
votes
1answer
39 views
DNA - Getting the highest key value from a defaultdict
I have come a bit on DNA and have managed to write an algorithm for adding the number of matches in the sequence to a defaultdict. But I'm having problems with how to get the maximum value from the ...
0
votes
1answer
24 views
Pset6 Cs50 = Readability false output
I have been trying to complete readability python but on every result it is showing before Grade one
from cs50 import get_string
s = get_string("Text: ").strip()
num_letters, num_sentences,...
0
votes
1answer
36 views
PSET6 - Readability: false grade output
from cs50 import get_string
text = get_string("Text: ")
letters = sentences = i = words = 0
length = len(text)
while i < length:
if text[i].isalpha():
letters += 1
//...
0
votes
1answer
27 views
Pset 6 - Readability printing one grade off
I managed to translate readability from C to python, except it is printing one grade lower than what it is supposed to when testing.
What am I missing here?
"""
1) Ask user for phrase
2)...
0
votes
1answer
42 views
check50 gives different output than my own for “18.txt” sequence. All others pass. Any thoughts/suggestions are appreciated
from sys import argv
import csv
import re
# Only run if argc is 3
if len(argv) == 3:
STRs = ["AGATC", "TTTTTTCT", "TCTAG", "GATA", "TATC", "...
0
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0answers
46 views
CS50 PSET 6 DNA Just Returns First Name
I've been working on DNA for a while now and thought I was done, but there's a problem with my code. Everytime I run it, the program just prints the first name on the database, so either 'Albus' or '...
0
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1answer
81 views
PSET 6 DNA - Computing STRs
I am trying to compute the most repeated STR for each sequence in a dictionary called str_dict.
# compute STRs
i = 0
# stablish length of the sequence
length_seq = len(sequence)
# iterate through all ...
0
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0answers
43 views
DNA pset6 My code works fine in small csv, but not large (Spoiler)
The problem happens with the count when i try to count STRs, it counts some str right and some wrong, which is strange for me, and when i deal with small csv all works fine.
can someone help me in ...
0
votes
1answer
39 views
Print keys of CSV files in DNA pset6
I want to see what the keys of the reader dictionary are so I use the print(key) function. The result is all the lines of the dictionary. Why is that?
import csv
from sys import argv, exit
# Check if ...
0
votes
1answer
45 views
Pset6 mario more didn't pass the test
I run through my code many times and didn't find anything wrong with it but the result printed out wasn't right:
from cs50 import get_int
while True:
height = get_int("How high is the pyramid?...
0
votes
1answer
80 views
Computing consecutive STR is sometimes off by a little (Spoiler!)
My code works fine for the small csv file; however, when I get to the big csv file, my counts for the number of consecutive STR are less than the actual value by about 1 or 2.
Here is my code:
import ...
0
votes
1answer
113 views
Count the number of spaces in a string in python
I was trying to figure out how to calculate the number of spaces in a string when i came across this code online. Can someone please explain it?
text = get_string("Enter Text: ")
spaces = ...
0
votes
1answer
119 views
pset6 count STR in the DNA sequence issues
so i m a bit confused...i have been testing my code using the small database and what i have so far produced what i expected ....
more specifically the STRcounts (i marked that part #?????). it is ...
0
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0answers
69 views
PSet 6 DNA: Not able to match variables to dictreader names
I've mostly completed my code for PSet 6, except for the last part where I need to match up the values against the list of names.
I know how to get the maximum occurances of the STRs and state the ...
0
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0answers
60 views
Can't figure out how to fix my code, any help please?
# open the CSV file and read its contents into memory
with open(argv[1], newline = '') as csvfile:
readCSV = list(csv.reader(csvfile))
for raw in readCSV:
pass
# Your program should ...
0
votes
0answers
116 views
pset6 DNA only getting “no match” SPOILER
I'm new to programming and have been stuck on the pset6 DNA assignment for a long time. The code outputs "no match" for everything, even though the output numbers from calculating the STR ...
0
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0answers
93 views
I'm stack with dna (pset6). can you please help me?
I have divided my code into three main pieces:
1- open the CSV file and read its contents into memory and open the DNA sequence and read its contents into memory
2- compute the longest run of ...
0
votes
1answer
176 views
PSET 6 DNA: How to get number of repeats for each value of STR's? [SPOILER: Full code]
I have written a code to count the highest number of consecutive repeats of specific DNA substring sequences in a long string of DNA...or so I thought. While my code can correctly count the longest ...
0
votes
1answer
84 views
DNA: Errors in sequences.3 and 18.txt
I have worked hard on writing codes for DNA. Everything works except for sequences/18.txt, which returns "Harry" instead of "No match". The problem still exists in spite of several ...
0
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0answers
40 views
DNA.py error: 'TypeError: unsupported operand type(s) for *: 'NoneType' and 'int''. It passes all but 2 of the tests
DNA.py is nearly finished, but it is failing the tests with sequence/15.txt and 16.txt. This is the error message:
~/pset6/dna/ $ python dna.py databases/large.csv sequences/16.txt
Traceback (most ...
0
votes
1answer
60 views
Pset6 Mario More
I submitted my code for Mario More in Python. Although it works properly by my own checks it gives me a 6/9 when submitted.
from cs50 import get_int
def main():
n = height()
for i in range(n)...
0
votes
1answer
195 views
Pset 6 DNA: improving efficiency
I've successfully submitted the below code on Pset6 for the DNA problem. But, I know my 'get_longest' function is a horror show as far as efficiency is concerned: I am doing a series of checks that I ...
0
votes
1answer
63 views
Issue with recording STRs in memory (PSET6 - DNA)
I'm trying to record the number of repetitions of each str in the sequence. I created a dictionary as below and another empty dict because i couldn't update a dict while iterating through it. But for ...
0
votes
1answer
230 views
Struggling with PSET6 DNA
I've been doing this for quite some time now, but I'm struggling to get the appropriate output. In the below code (which is incomplete as of now, but the main pieces are all on the board), I'm not ...
1
vote
0answers
94 views
PSET 6 DNA ~ some STR count is above the correct value by 1?
I'm almost done with pset6 hopefully
but I have one problem with my code
When i run it with for example python dna.py databases/small.csv sequences/4.txt python dna.py databases/large.csv sequences/10....
0
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0answers
42 views
Cs50 pset6 readability.py math
I'm trying to run this code and everything complies but when I enter the text in it is giving me the wrong grade level. I believe it might be something in the math, but am still unsure.
Here's my code:...
0
votes
1answer
156 views
Pset6 DNA Not matching to names in the database
The print statements seem to turn out what I hoped for up until trying to compare the STR counts to the database STR counts.
I would just appreciate any pointers of where I'm going wrong thanks.
...
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0answers
50 views
Almost Done… But substrings
// Returns true if word is in dictionary else false
bool check(const char *word)
{
//Variables
bool looping = true;
int hashWord = hash(word);
//Create a new pointers
node *head = table[hashWord];
...
0
votes
1answer
53 views
PSET6 Credit - checksum not giving the correct number
list1 = list(input("Number: ").strip())
even_count, odd_count, count = 0, 0, 0
# if the length is even
if len(list1)%2 == 0:
# iterating each number in list
for num in list1:
...
1
vote
1answer
43 views
Unexpected error in homemade string search function
I am playing around with Python on the DNA problem. I realize there are some string methods that might make this problem easier but my gut instinct was to try and make an "search function" ...
0
votes
1answer
78 views
Struggling to align pyramid and check for extra spaces at the end of each line in pset6 mario.py less
I'm struggling to meet these specifications - "Be sure that the pyramid is aligned to the bottom-left corner of your terminal, and that there are no extra spaces at the end of each line."
...
0
votes
0answers
46 views
DNA Pset6 Can't run my program
I cant even run my program it keeps saying "list index out of range". I don't know whats wrong... Does anyone have any idea?
import sys
import csv
def repeats(seq, part):
rep = [0] * ...
0
votes
1answer
193 views
Pset6 DNA help - trouble calculating STR repeats with long database
I have really tried to just solve this one myself but after a few weeks this seems futile without guidance. I am having trouble getting a for loop to calculate the maximum consecutive occurrences of ...
0
votes
3answers
213 views
PSET6 Mario Python
I have been experiementing with this code for a couple hours and have come across an issue with each implementation. I can no longer put in any time at the moment so I figured I would go ahead and ask....
