Questions tagged [pset6]
The problem set for Week 7
846
questions
0
votes
0answers
19 views
There is something wrong with the DNA file
I am doing Problem Set 6 DNA. And it looks like the data given to me in the large file is incorrect. When I am running my code with small file it works fine. But when I run with large file it is not ...
0
votes
0answers
14 views
My DNA program is showing me this error repeatedly
The error is written below:
Traceback (most recent call last):
File "/home/ubuntu/pset/pset6/dna/dna.py", line 54, in <module>
main()
File "/home/ubuntu/pset/pset6/dna/dna....
0
votes
0answers
10 views
Pset6 [DNA] . Works when I check by hand, but doesn't correctly identify names with check50.(doesn't return anything)
import sys
import csv
def main():
if len(sys.argv) != 3:
print("Should be 3 command-line arguments ")
sys.exit(1)
with open(sys.argv[2], 'r') as f:
for line ...
0
votes
1answer
21 views
What does "consecutively" mean in pset6 DNA?
I am working on pset6 DNA and I'm not sure I understand the terms of the problem.
The objective is to write a program that matches a DNA sequence to a person in a DNA database based on the largest ...
0
votes
1answer
31 views
PSET6 - Readability. When I am running my program it is showing me this error again and again
The error I am getting
Traceback (most recent call last):
File "/home/ubuntu/pset/pset6/readability/readability.py", line 46, in
<module>
main()
File "/home/ubuntu/pset/pset6/...
1
vote
1answer
51 views
How should rounding be handled in pset6 readability?
I'm struggling to understand what sort of rounding needs to be implemented to produce the grade in [pset6 readability][1].
For the Harry Potter extract provided ("Harry Potter was a highly ...
0
votes
1answer
15 views
My program is not is not able to import strlen from string.h
I am working on problem set 6 - Readability (python). When I am compiling my code the following error keeps coming.
Traceback (most recent call last):
File "/home/ubuntu/pset/pset6/readability/...
0
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0answers
20 views
Code Pset6 - DNA fails: no result at all
Can anyone please give me a hint? I've been working on my code for days now and I don't have a clue how to fix it. My code is included below.
import csv
from sys import argv, exit
#initialize ...
0
votes
1answer
38 views
My program is not working
I am working on pset6 Mario. When I am running my program it is showing me some errors. But I think my code is correct.
Here is my code:
from cs50 import get_int
row = 0
space = 0
insert = 0
...
0
votes
0answers
18 views
Pset6 Readability Python: no output
from cs50 import get_string, get_int
import sys
def main():
statement = get_string("Text: ")
count = len(statement)
no_words = count_words(statement)
no_letters = ...
0
votes
1answer
46 views
Pset6 - DNA - Strange Error
I'm in the [ Testing ] section and my program works fine with [ small.csv ], but the expected data is not the same as the real data:
For example:
If I run this: python dna.py databases/large.csv ...
0
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0answers
14 views
Problem with pset6 readability.py
It showing that one test failing.
expected "Grade 8\n", not "Grade 7\n"
After I'm going to results page, copy the text they use in test and manually testing it in my console, The ...
0
votes
1answer
62 views
Credit Card Check
So I am on pset6 trying to implement the credit card check.
I've already completed working through the numbers and am not having any issue with the actual algorithm.
But for some reason my if ...
0
votes
0answers
24 views
PSET6 Credit Regex Error
I have attempted to use regex matching to solve the credit problem, but I am encountering the problem of syntax error when trying to run my code. The regex.match function I tried to use was found from ...
0
votes
1answer
57 views
DNA Max Sequence Bug | Working on small.csv but not on large.csv
This is the complete code:
"""
- open csv file and sequence , read contents
- for each str, compute longest chain
- compare str counts aganist ech row in csv file
"""...
1
vote
1answer
38 views
DNA: Excluding a column from my dict iteration
Logic: I'm trying to do this in such a way that I check the database first, then I check the DNA sequence to see if that information corresponds to any of the information in my database.
I want to ...
0
votes
1answer
72 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 ...
0
votes
1answer
68 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
68 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
67 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
48 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
28 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
54 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
votes
1answer
59 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
votes
1answer
21 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
55 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
votes
1answer
22 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
20 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
31 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
86 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
46 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
89 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
47 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
46 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
43 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
33 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
47 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
votes
0answers
48 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
votes
1answer
112 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
votes
1answer
63 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
44 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
51 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
83 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
192 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
130 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
votes
0answers
71 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
votes
1answer
205 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
102 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
votes
1answer
72 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
210 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 ...
