Extracting a coordinate from a python list of tuples
I have a python list
training_data=[(x_1, y_1), (x_2, y_2), ..., (x_n, y_n)]
and I wish to extract a list of x values
training_data_x=[x_1, x_2, ..., x_n]
I have tried
for j in range(0, len(training_data)):
training_data_x=[i for i in training_data[j][0]]
and
training_data_x=[i for i in training_data[j][0] for j in range(0, len(training_data))]
but neither worked. How can I do this?
python list tuples
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
add a comment |
I have a python list
training_data=[(x_1, y_1), (x_2, y_2), ..., (x_n, y_n)]
and I wish to extract a list of x values
training_data_x=[x_1, x_2, ..., x_n]
I have tried
for j in range(0, len(training_data)):
training_data_x=[i for i in training_data[j][0]]
and
training_data_x=[i for i in training_data[j][0] for j in range(0, len(training_data))]
but neither worked. How can I do this?
python list tuples
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
[coord[0] for coord in training_data]?
– Paulo Scardine
Nov 27 '18 at 5:20
add a comment |
I have a python list
training_data=[(x_1, y_1), (x_2, y_2), ..., (x_n, y_n)]
and I wish to extract a list of x values
training_data_x=[x_1, x_2, ..., x_n]
I have tried
for j in range(0, len(training_data)):
training_data_x=[i for i in training_data[j][0]]
and
training_data_x=[i for i in training_data[j][0] for j in range(0, len(training_data))]
but neither worked. How can I do this?
python list tuples
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
I have a python list
training_data=[(x_1, y_1), (x_2, y_2), ..., (x_n, y_n)]
and I wish to extract a list of x values
training_data_x=[x_1, x_2, ..., x_n]
I have tried
for j in range(0, len(training_data)):
training_data_x=[i for i in training_data[j][0]]
and
training_data_x=[i for i in training_data[j][0] for j in range(0, len(training_data))]
but neither worked. How can I do this?
python list tuples
python list tuples
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
asked Nov 27 '18 at 5:17
Shrey JoshiShrey Joshi
1205
1205
[coord[0] for coord in training_data]?
– Paulo Scardine
Nov 27 '18 at 5:20
add a comment |
[coord[0] for coord in training_data]?
– Paulo Scardine
Nov 27 '18 at 5:20
[coord[0] for coord in training_data] ?– Paulo Scardine
Nov 27 '18 at 5:20
[coord[0] for coord in training_data] ?– Paulo Scardine
Nov 27 '18 at 5:20
add a comment |
3 Answers
3
active
oldest
votes
I prefer a list comprehension with a self-documenting tuple unpacking:
[x for x,y in training_data]
Complete program:
training_data=[(1.5, 11), (2.5, 22), (7.5, 77)]
training_data_x = [x for x,y in training_data]
print(training_data_x)
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
add a comment |
A comprehension would do:
training_data_x = [x[0] for x in training_data]
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
add a comment |
Looks like you just have a list of tuples. I'm still a bit new to python, but I would try :
training_data_x =
for i in training_data:
training_data_x.append(i[0])
another way you could do is create a function that takes tuple and returns the x. Then map the function to your training_data_x variable.
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
I prefer a list comprehension with a self-documenting tuple unpacking:
[x for x,y in training_data]
Complete program:
training_data=[(1.5, 11), (2.5, 22), (7.5, 77)]
training_data_x = [x for x,y in training_data]
print(training_data_x)
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
add a comment |
I prefer a list comprehension with a self-documenting tuple unpacking:
[x for x,y in training_data]
Complete program:
training_data=[(1.5, 11), (2.5, 22), (7.5, 77)]
training_data_x = [x for x,y in training_data]
print(training_data_x)
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
add a comment |
I prefer a list comprehension with a self-documenting tuple unpacking:
[x for x,y in training_data]
Complete program:
training_data=[(1.5, 11), (2.5, 22), (7.5, 77)]
training_data_x = [x for x,y in training_data]
print(training_data_x)
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
I prefer a list comprehension with a self-documenting tuple unpacking:
[x for x,y in training_data]
Complete program:
training_data=[(1.5, 11), (2.5, 22), (7.5, 77)]
training_data_x = [x for x,y in training_data]
print(training_data_x)
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
answered Nov 27 '18 at 5:21
RobᵩRobᵩ
117k13138222
117k13138222
add a comment |
add a comment |
A comprehension would do:
training_data_x = [x[0] for x in training_data]
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
add a comment |
A comprehension would do:
training_data_x = [x[0] for x in training_data]
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
add a comment |
A comprehension would do:
training_data_x = [x[0] for x in training_data]
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
A comprehension would do:
training_data_x = [x[0] for x in training_data]
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
answered Nov 27 '18 at 5:20
NetwaveNetwave
12.5k22144
12.5k22144
add a comment |
add a comment |
Looks like you just have a list of tuples. I'm still a bit new to python, but I would try :
training_data_x =
for i in training_data:
training_data_x.append(i[0])
another way you could do is create a function that takes tuple and returns the x. Then map the function to your training_data_x variable.
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
add a comment |
Looks like you just have a list of tuples. I'm still a bit new to python, but I would try :
training_data_x =
for i in training_data:
training_data_x.append(i[0])
another way you could do is create a function that takes tuple and returns the x. Then map the function to your training_data_x variable.
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
add a comment |
Looks like you just have a list of tuples. I'm still a bit new to python, but I would try :
training_data_x =
for i in training_data:
training_data_x.append(i[0])
another way you could do is create a function that takes tuple and returns the x. Then map the function to your training_data_x variable.
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
Looks like you just have a list of tuples. I'm still a bit new to python, but I would try :
training_data_x =
for i in training_data:
training_data_x.append(i[0])
another way you could do is create a function that takes tuple and returns the x. Then map the function to your training_data_x variable.
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
answered Nov 27 '18 at 6:20
RockAndRoleCoderRockAndRoleCoder
5614
5614
add a comment |
add a comment |
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[coord[0] for coord in training_data]?– Paulo Scardine
Nov 27 '18 at 5:20