I am trying to get all the info of a .wav file by interpreting it as a text file, but using the next code:
import wave
w = wave.open('C:/Users/jorge/Desktop/Programas/Python/Datos/Si_Canciones/NSYNC - Its Gonna Be Me.wav', 'r') # :P
for i in range(5000):#w.getnframes()):
frame = w.readframes(i)
print(frame)
It prints all as I want, but at the end I get something like this:
00\x00\x00\x00\x00\x00\x00\x0
b''
b''
b''
b''
#And the b''s continue for a while
I would like to add something like this in the for, so I don't get rid off those b''s:
if (something):
break
But I don't know what that "something" could be. Can someone help me with it? :/
(I stay tuned to your answers and wish you a nice week)
The most obvious answer would be
if frame==b"":
break
But as stated in the docs, there is also a method that gives you the amount of frames; so you might want to use that; enabling you to only iterate through the existing frames. I'm not familiar with the module though.
Related
I've started programming in Python just recently but I've come over my first issue and that is:
uart.readline()
I'm sending multiple lines of data over UART to control my LED lights at home, so my idea is to send something like "r255", "g255", "b255", "br5". The format of the data being sent is not important to me, important is to get red, green, and blue values between 0-255 and a brightness value between 1-10 and somehow decode and process the data in Python. Btw. I'm sending the data from my Android App, the formatting and everything on that end should be fine.
But to the problem. I have a code as follows:
uart = UART(0,9600)
while True:
if uart.any():
data = uart.readline()
print(data)
This returns something like this for the red value:
b'r'
b'2'
b'5'
b'5'
That's fine to me and I understand why that is happening. I can probably work out how to put the data together so they make sense and work with them but the problem is that each line is actually going through another cycle so I can't really do any operations in the while loop to get the data together, or can I?
If I try something like this:
while True:
if uart.any():
data = uart.readline()
data2 = uart.readline()
data3 = uart.readline()
print(data)
print(data2)
print(data3)
I get:
b'r'
None
None
What is a solution to this problem? Am I missing something really obvious? Why can't I read more than one line in that loop? Why does the loop always have to repeat to read another line? How do I approach this in order to get the data together? I've tried uart.read() but it always returns something else like b'red2' b'55' or b'red255' or b'red' b'255' so it's even more mess and too much for me to understand what's happening there.
I can't test this for obvious reasons, but this should correct the problem of not calling uart.any() before each uart.readline(). I defined a separate function to do that and call it multiple times.
import time
import uart
def read_line():
while not uart.any():
time.sleep(0.0001)
return uart.readline()
while True:
lines = [read_line() for _ in range(3)] # Read 3 lines.
print(b''.join(lines)) # Join them together.
So I am making a code like a guessing game. The data for the guessing game is in the CSV file so I decided to use pandas. I have tried to use pandas to import my csv file, pick a random row and put the data into variables so I can use it in the rest of the code but, I can't figure out how to format the data in the variable correctly.
I've tried to split the string with split() but I am quite lost.
ar = pandas.read_csv('names.csv')
ar.columns = ["Song Name","Artist","Intials"]
randomsong = ar.sample(1)
songartist = randomsong["Artist"]
songname = (randomsong["Song Name"])
songintials = randomsong["Intials"]
print(songname)
My CSV file looks like this.
Song Name,Artist,Intials
Someone you loved,Lewis Capaldi,SYL
Bad Guy,Billie Eilish,BG
Ransom,Lil Tecca,R
Wow,Post Malone, W
I expect the output to be the name of the song from the csv file. For Example
Bad Guy
Instead the output is
1 Bad Guy
Name: Song Name, dtype:object
If anyone knows the solution please let me know. Thanks
You're getting a series object as output. You can try
randomsong["Song Name"].to_string()
Use df['column].values to get values of the column.
In your case, songartist = randomsong["Artist"].values[0] because you want only the first element of the returned list.
I have a json file for tweet data. The data that I want to look at is the text of the tweet. For some reason, some of the tweets are too long to put into the normal text part of the dictionary.
It seems like there is a dictionary within another dictionary and I can't figure out how to access it very well.
Basically, what I want in the end is one column of a data frame that will have all of the text from each individual tweet. Here is a link to a small sample of the data that contains a problem tweet.
Here is the code I have so far:
import json
import pandas as pd
tweets = []
#This writes the json file so that I can work with it. This part works correctly.
with open("filelocation.txt") as source
for line in source:
if line.strip():
tweets.append(json.loads(line))
print(len(tweets)
df = pd.DataFrame.from_dict(tweets)
df.info()
When looking at the info you can see that there will be a column called extended_tweet that only encompasses one of the two sample tweets. Within this column, there seems to be another dictionary with one of those keys being full_text.
I want to add another column to the dataframe that just has this information along with the normal text column when the full_text is null.
My first thought was to try and read that specific column of the dataframe as a dictionary again using:
d = pd.DataFrame.from_dict(tweets['extended_tweet]['full_text])
But this doesn't work. I don't really understand why that doesn't work as that is how I read the data the first time.
My guess is that I can't look at the specific names because I am going back to the list and it would have to read all or none. The error it gives me says "KeyError: 'full_text' "
I also tried using the recommendation provided by this website. But this gave me a None value no matter what.
Thanks in advance!
I tried to do what #Dan D. suggested, however, this still gave me errors. But it gave me the idea to try this:
tweet[0]['extended_tweet']['full_text']
This works and gives me the value that I am looking for. But I need to run through the whole thing. So I tried this:
df['full'] = [tweet[i]['extended_tweet']['full_text'] for i in range(len(tweet))
This gives me "Key Error: 'extended_tweet' "
Does it seem like I am on the right track?
I would suggest to flatten out the dictionaries like this:
tweet = json.loads(line)
tweet['full_text'] = tweet['extended_tweet']['full_text']
tweets.append(tweet)
I don't know if the answer suggested earlier works. I never got that successfully. But I did figure out something else that works well for me.
What I really needed was a way to display the full text of a tweet. I first loaded the tweets from the json with what I posted above. Then I noticed that in the data file, there is something called truncated. If this value is true, the tweet is cut short and the full tweet is placed within the
tweet[i]['extended_tweet]['full_text]
In order to access it, I used this:
tweet_list = []
for i in range(len(tweets)):
if tweets[i]['truncated'] == 'True':
tweet_list.append(tweets[i]['extended_tweet']['full_text']
else:
tweet_list.append(tweets[i]['text']
Then I can work with the data using the whol text from each tweet.
I am working with a csv file containing tweets which was generated using this project: https://github.com/Jefferson-Henrique/GetOldTweets-python.
The 2 first tweets, and the headings in the csv file can be seen below:
username;date;retweets;favorites;text;geo;mentions;hashtags;id;permalink;;
thepsalami;02-04-2014 01:59;0;2;Must be #aprilfools because everyone is
saying #HIMYM is over! Haha it'll never stop as long as we hold fast to the
memories.;;;#aprilfools #HIMYM;
4,51147E+17;https://twitter.com/thepsalami/status/451146992131923968;;
shahanasiddiqui;02-04-2014 01:59;0;0;#promahuq yeah B-R was no surprise -
the ending was just right. My FB turned into #HIMYM blog site! Man that show
had a huge impact!;;#promahuq;#HIMYM;4,51147E+17;https://twitter.com/shahanasiddiqui/status
/451146991955759105;;
I want to save this in a dict such that I can easily access e.g. the username, the time or the text. I tried using csv.DictReader:
input_file = csv.DictReader(open("HIMYM_tweets.csv"))
But that results in something very weird:
{'username;date;retweets;favorites;text;geo;mentions;hashtags;id;permalink;;':
"thepsalami;02-04-2014 01:59;0;2;Must be #aprilfools because everyone is
saying #HIMYM is over! Haha it'll never stop as long as we hold fast to the
memories.;;;#aprilfools #HIMYM; 4", None:['51147E+17;https://twitter.com/thepsalami/status/451146992131923968;;']}
{'username;date;retweets;favorites;text;geo;mentions;hashtags;id;permalink;;': ' ....
Any help on creating such a dict, or maybe doing something smarter is very appreciated :D
As the comment by David you need to consider the delimeter when using the DictReader.
Just replace your code with this and it should work
input_file = csv.DictReader(open("HIMYM_tweets.csv"),delimeter=";")
Basically, I have a troubleshooting program, which, I want the user to enter their input. Then, I take this input and split the words into separate strings. After that, I want to create a dictionary from the contents of a .CSV file, with the key as recognisable keywords and the second column as solutions. Finally, I want to check if any of the strings from the split users input are in the dictionary key, print the solution.
However, the problem I am facing is that I can do what I have stated above, however, it loops through and if my input was 'My phone is wet', and 'wet' was a recognisable keyword, it would go through and say 'Not recognised', 'Not recognised', 'Not recognised', then finally it would print the solution. It says not recognised so many times because the strings 'My', 'phone' and 'is' are not recognised.
So how do I test if a users split input is in my dictionary without it outputting 'Not recognised' etc..
Sorry if this was unclear, I'm quite confused by the whole matter.
Code:
import csv, easygui as eg
KeywordsCSV = dict(csv.reader(open('Keywords and Solutions.csv')))
Problem = eg.enterbox('Please enter your problem: ', 'Troubleshooting').lower().split()
for Problems, Solutions in (KeywordsCSV.items()):
pass
Note, I have the pass there, because this is the part I need help on.
My CSV file consists of:
problemKeyword | solution
For example;
wet Put the phone in a bowl of rice.
Your code reads like some ugly code golf. Let's clean it up before we look at how to solve the problem
import easygui as eg
import csv
# # KeywordsCSV = dict(csv.reader(open('Keywords and Solutions.csv')))
# why are you nesting THREE function calls? That's awful. Don't do that.
# KeywordsCSV should be named something different, too. `problems` is probably fine.
with open("Keywords and Solutions.csv") as f:
reader = csv.reader(f)
problems = dict(reader)
problem = eg.enterbox('Please enter your problem: ', 'Troubleshooting').lower().split()
# this one's not bad, but I lowercased your `Problem` because capital-case
# words are idiomatically class names. Chaining this many functions together isn't
# ideal, but for this one-shot case it's not awful.
Let's break a second here and notice that I changed something on literally every line of your code. Take time to familiarize yourself with PEP8 when you can! It will drastically improve any code you write in Python.
Anyway, once you've got a problems dict, and a problem that should be a KEY in that dict, you can do:
if problem in problems:
solution = problems[problem]
or even using the default return of dict.get:
solution = problems.get(problem)
# if KeyError: solution is None
If you wanted to loop this, you could do something like:
while True:
problem = eg.enterbox(...) # as above
solution = problems.get(problem)
if solution is None:
# invalid problem, warn the user
else:
# display the solution? Do whatever it is you're doing with it and...
break
Just have a boolean and an if after the loop that only runs if none of the words in the sentence were recognized.
I think you might be able to use something like:
for word in Problem:
if KeywordsCSV.has_key(word):
KeywordsCSV.get(word)
or the list comprehension:
[KeywordsCSV.get(word) for word in Problem if KeywordsCSV.has_key(word)]