Machine Learning - What’s in a column?

Question

Machine Learning - What's in a Column?

Getting a column from a numpy array.

Task
Given a csv file and a column name, print the elements in the given column.

Input Format
First line: filename of a csv file
Second line: column name

Output Format
Numpy array

Sample Input
https://sololearn.com/uploads/files/one.csv
a

File one.csv contents:
a,b
1,3
2,4

Sample Output
[1 2]

My code so far

Import pandas as pd
df = pd.read_csv("/usercode/files/one.csv")
arr = df[['a', 'b']].values
print(arr.shape)
filename = input()
column_name = input()

Answer 1

filename = input()
column_name = input()

import pandas as pd
import numpy as np

df = pd.read_csv(filename) # read the file as a pandas dataframe
arr = np.array(df[column_name]) # transform the pretended column as a numpy array
print(arr) # show the value of the array

better way to understand how to do it ;)

Answer 2

import pandas as pd
import numpy as np
filename = input()
column_name = input()
fl= pd.read_csv(filename)
print (fl[column_name].values)

Answer 3

Hay hay what had you did this the pro challenges. You can't post them in public . Posting pro challenges!
I dont think it's fair.

this might help you \/

import pandas as pd
import numpy as np
filename = input()
column_name = input()
a=pd.read_csv(filename)
b=a[column_name]
print(np.array(b))

your code seems very unlogical because taking input after doing all operations.!

Answer 4

import pandas as pd

filename = input()
column_name = input()

df = pd.read_csv(filename)

print(df[column_name].values)

i did mine like this and it worked perfectly.
Read the file assigned by the user to the filename and print the value of the character assigned to the column name

Answer 5

Who can tell what's in test ceses 3 - 5 ???
I've passed 1 and 2, but hard to guess farther if you don't know what's being checked.

Answer 6

this will covers all cases:

import pandas as pd
import numpy as np
filename = input()
x= pd.read_csv(filename)
column_name = input()
d=x[column_name].values
print(np.array(d))

Answer 7

solved

import pandas as pd
import numpy as np
filename = input()
x= pd.read_csv(filename)
column_name = input()
d=x[column_name].values
print(np.array(d))

Answer 8

import pandas as pd

filename = input()
column_name = input()

df = pd.read_csv(filename)
print(df[column_name].values)

Answer 9

the answer is

import pandas as pd
import numpy as np
filename = input()
column_name = input()
fl= pd.read_csv(filename)
print (fl[column_name].values)

Answer 10

import pandas as pd
import numpy as np
filename = input()
column_name = input()
fl= pd.read_csv(filename)
print (fl[column_name].values)

Answer 11

import numpy as np
n = int(input())
X = []
for i in range(n):
X.append([float(x) for x in input().split()])
y = [int(x) for x in input().split()]
datapoint = [float(x) for x in input().split()]
from sklearn.linear_model import LogisticRegression
model = LogisticRegression()
model.fit(X,y)
datapoint = np.array(datapoint).reshape(1,-1)

print(model.predict(datapoint[[0]])[0])

Answer 12

filename = input()
column_name = input()
import pandas as pd
df = pd.read_csv(filename)
print(df[column_name].values)

Answer 13

丹ⓨㄩک廾, thank you, it works!

Answer 14

import pandas as pd
df = pd.read_csv('https://sololearn.com/uploads/files/one.csv')
arr = df[['a', 'b']].values
print(arr[:,0])

Answer 15

I'm having a problem with the same task.
If I run my code on Jupiter it works perfectly.
However, on the python editor on sololearn, it is not working.

Here is my code:

import pandas as pd
df = pd.read_csv('https://sololearn.com/uploads/files/one.csv')
col = df['a'].values
col2 = df['b'].values

print(col)
print(col2)

Error: urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>

Anybody, please help.
Thank you.

Answer 16

filename = input()
column_name = input()

import pandas as pd
import numpy as np

df = pd.read_csv(filename) # read the file as a pandas dataframe
arr = np.array(df[column_name]) # transform the pretended column as a numpy array
print(arr) # show the value of the array

Answer 17

import pandas as pd
import numpy as np
filename = input()
column_name = input()
fl= pd.read_csv(filename)
print (fl[column_name].values)

#This code is right😀

Answer 18

filename = input()
column_name = input()

import pandas as pd #use pandas to read the csv file
import numpy as np# use numpy for converting the column entries into numpy array
data= pd.read_csv(filename)
a= data[column_name].values
print(np.array(a))

Answer 19

filename = input()
column_name = input()

import pandas as pd
df = pd.read_csv(filename)
print(df[column_name].values)

Answer 20

Machine Learning - What's in a Column?

Getting a column from a numpy array.

Task
Given a csv file and a column name, print the elements in the given column.

Input Format
First line: filename of a csv file
Second line: column name

Output Format
Numpy array

Sample Input
https://sololearn.com/uploads/files/one.csv
a

File one.csv contents:
a,b
1,3
2,4

Sample Output
[1 2]