Python3 float to int from load file [closed] - python

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I am beginner in python and I have a file with e.g data:
123.141212412
123124.5436456
13123.123546
I am trying to convert it to inteeger.
My idea was load file to a list and format the records. But it throws an error.
I did:
file.write(str(format(list1,'.0f')))


You may perform the same in this manner :
file = open('test.txt', 'r')
# List to hold the numbers
x = []
# end = split at \n because \n is read in lines too
for line in file.read().split('\n'):
# Type casting to int
int_num = int(float(line))
# saving the int part of the data in list
x.append(int_num)
# printing the int part
print(int_num)


You cannot directly apply format on a list, you have to loop through your list to do so, like this:
for number in list1:
file.write(format(number, ".0f") + "\n")
Of course, this assumes file exists and have been correctly defined, like this:
file = open("my_filename", "w")

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How to get a specific string from file? [closed]

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I have a JSON file like this:
{"objects":[{"featureId":"ckm39acfw00043b6a4i8vv8zf","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{
top":110,"left":799,"height":42,"width":53},"instanceURI":<"https://api.labelbox.com/masks/feature/ckm39acfw00043b6a4i8vv8zf?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"
},{"featureId":"ckm39agzr00073b6alzzwpm77","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":
{"top":151,"left":875,"height":45,"width":120},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39agzr00073b6alzzwpm77?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"},{"featureId":"ckm39an0e000a3b6ae7vc0bo8","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":635,"left":952,"height":93,"width":84},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39an0e000a3b6ae7vc0bo8?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"},{"featureId":"ckm39bbki000g3b6au6s5s3se","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":646,"left":764,"height":74,"width":93},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39bbki000g3b6au6s5s3se?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"
},{"featureId":"ckm39cgdi000p3b6aru669fzh","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":
{"top":375,"left":916,"height":52,"width":80},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39cgdi000p3b6aru669fzh?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"
},{"featureId":"ckm39ckyi000s3b6armui3tn3","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":420,"left":914,"height":72,"width":86},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39ckyi000s3b6armui3tn3?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"
},{"featureId":"ckm39cp6a000v3b6a6cjj16xp","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":478,"left":867,"height":66,"width":137},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39cp6a000v3b6a6cjj16xp?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"},{"featureId":"ckm39cyom000y3b6aqp2x5i0s","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":703,"left":806,"height":85,"width":95},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39cyom000y3b6aqp2x5i0s?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"},{"featureId":"ckm39dz3t00143b6a2brbj4qi","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":41,"left":823,"height":50,"width":80},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39dz3t00143b6a2brbj4qi?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"},{"featureId":"ckm39eco400173b6a35p84q7y","schemaId":"ckm399dnn07ax0y8hdncv51yy","title":"Buildings","value":"buildings","color":"#1CE6FF","bbox":{"top":31,"left":892,"height":62,"width":95},"instanceURI":"https://api.labelbox.com/masks/feature/ckm39eco400173b6a35p84q7y?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja20yN3F1aDVwNzh2MDc4OXh3YmE3eWo5Iiwib3JnYW5pemF0aW9uSWQiOiJja20yN3F0cm1wNzhvMDc4OXBlaHJiZG4wIiwiaWF0IjoxNjE1MzcyNjUxLCJleHAiOjE2MTc5NjQ2NTF9.ALYeG0mpNvnOpAuj6O3h0OFcrREOtOvJqqVqqt8xcqw"}],"classifications":[]}
and I want to save in array all occurrences of top, left, right, height and width. How can I do that?

Firstly, the JSON file does not look valid. For my answer I'll assume a valid file like so:
#example.json
{
"top":151,
"left":875,
"height":45,
"width":120
}
Next you can use python's builtin library 'json' to load the json and extract information:
import json
with open('test.json', 'r') as fh:
d = json.load(fh)
print(d.get('top'))
Notice that first you load the json file's content into a dictionary and then you can access it's contents in the same way you would a dictionary using d.get('top') or d['top']

Reading a particular set from a file in python [closed]

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I want read from file and store it as an array, for example :
test.txt :
1,2,7,2,3
5,8,1,6
7,4
7,4,4,4,4,4,4,4,4,0,5,4
Output:
{1,2,3,7}
{1,5,6,8}
{4,7}
{0,4,5,7}
How to fetch it as an array?

From what I understand, you want to parse your file in order to output the sets of numbers for each line, isn't it ?
If it is, a solution could be:
with open("test.txt") as f:
content = f.read()
l = [set(int(x) for x in l.split(','))
for l in content.splitlines()]
print (l)
This piece of code does not sort the set though, to do this, you will have to use frozenset as well as the sorted built-in function.

This should work.
Read from file
Split using newline character
Replace , in set
Like this
with open("test.txt",'r') as text_file: #reading in read mode
#to get the list of lines replacing new line
lines=text_file.read().split('\n')
#replace commas and make a set
set_of_lines = [ set(line.replace(",","")) for line in lines]
for line in set_of_lines:
print(line)

Python take the string of anything, ignoring all escape characters [closed]

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I am trying to make a function that takes typically copy-pasted text that very often includes \n characters. An example of such is as follows:
func('''This
is
some
text
that I entered''')
The problem with this function is the text can sometimes be rather large, so taking it line by line to avoid ', " or ''' isn't plausible. A piece of text that can cause issues is as follows:
func('''This
is'''
some"
text'
that I entered''')
I wanted to know if there is any way I can take the text as seen in the second example and use it as a string regardless of what it is comprised of.
Thanks!

To my knowledge, you won't be able to paste the text directly into your file. However, you could paste it into a text file.
Use regex to find triple quotes ''' and other invalid characters.
Example python:
def read_paste(file):
import re
with open(file,'r') as f:
data = f.readlines()
for i,line in enumerate(data):
data[i] = re.sub('("|\')',r'\\\1',line)
output = str()
for line in data:
output += line
return output

How do I read a text file into a string variable in Python starting at the second line? [closed]

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I use the following code segment to read a file in python
file = open("test.txt", "rb")
data=file.readlines()[1:]
file.close
print data
However, I need to read the entire file (apart from the first line) as a string into the variable data.
As it is, when my files contents are test test test, my variable contains the list ['testtesttest'].
How do I read the file into a string?
I am using python 2.7 on Windows 7.

The solution is pretty simple. You just need to use a with ... as construct like this, read from lines 2 onward, and then join the returned list into a string. In this particular instance, I'm using "" as a join delimiter, but you can use whatever you like.
with open("/path/to/myfile.txt", "rb") as myfile:
data_to_read = "".join(myfile.readlines()[1:])
...
The advantage of using a with ... as construct is that the file is explicitly closed, and you don't need to call myfile.close().

How to read input in python using raw_input [closed]

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Sample Input (in Plaintext)
1
1 2
Description- The first line contains an integer t, denoting the number of test cases. Next t lines contain two integers, a and b separated by a space.
My question is how can I load these inputs into variables using Python 2.7? Also I need to load this into IDE without using "xxx.py > input.txt"

raw_input() takes in a line of input as a string. The .split() string method produces a list of the whitespace-separated words in a string. int() parses a string as an int. So putting that together, you can read the input you want using
t = int(raw_input())
cases = []
for i in range(t):
cases.append( map(int, raw_input().split()) )
This will give you a list of a,b pairs if the input is in the correct format, but won't do any error checking.

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