formatted output

[Sudheer Joseph]

Dear members,
I need to print few arrays in a tabular form for example below array IL has 25 elements, is there an easy way to print this as 5x5 comma separated table? in python

IL=[]
for i in np.arange(1,bno+1):
IL.append(i)
print(IL)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
in fortran I could do it as below
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
integer matrix(5,5)
in=0
do, k=1,5
do, l=1,5
in=in+1
matrix(k,l)=in
enddo
enddo
m=5
n=5
do, i=1,m
write(*,"(5i5)") ( matrix(i,j), j=1,n )
enddo
end

 

[Roy Smith]

Dear members,
I need to print few arrays in a tabular form for example below
array IL has 25 elements, is there an easy way to print this as
5x5 comma separated table? in python

IL=[]
for i in np.arange(1,bno+1):
IL.append(i)
print(IL)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
in fortran I could do it as below
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
integer matrix(5,5)
in=0
do, k=1,5
do, l=1,5
in=in+1
matrix(k,l)=in
enddo
enddo
m=5
n=5
do, i=1,m
write(*,"(5i5)") ( matrix(i,j), j=1,n )
enddo
end

Excellent. My kind of programming language! See
http://www.python.org/doc/humor/#bad-habits.

Anyway, that translates, more or less, as follows.

Note that I'm modeling the Fortran 2-dimensional array as a dictionary
keyed by (k, l) tuples. That's easy an convenient, but conceptually a
poor fit and not terribly efficient. If efficiency is an issue (i.e.
much larger values of (k, l), you probably want to be looking at numpy.

Also, "in" is a keyword in python, so I changed that to "value".
There's probably cleaner ways to do this. I did a pretty literal
transliteration.


matrix = {}
value = 0
for k in range(1, 6):
for l in range(1, 6):
value += 1
matrix[(k, l)] = value

for i in range(1, 6):
print ",".join("%5d" % matrix[(i, j)] for j in range(1, 6))

This prints:

1, 2, 3, 4, 5
6, 7, 8, 9, 10
11, 12, 13, 14, 15
16, 17, 18, 19, 20
21, 22, 23, 24, 25

 

[Peter Otten]

Dear members,
I need to print few arrays in a tabular form for example
below array IL has 25 elements, is there an easy way to print
this as 5x5 comma separated table? in python

IL=[]
for i in np.arange(1,bno+1):
IL.append(i)
print(IL)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
in fortran I could do it as below
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
integer matrix(5,5)
in=0
do, k=1,5
do, l=1,5
in=in+1
matrix(k,l)=in
enddo
enddo
m=5
n=5
do, i=1,m
write(*,"(5i5)") ( matrix(i,j), j=1,n )
enddo
end

Excellent. My kind of programming language! See
http://www.python.org/doc/humor/#bad-habits.

Anyway, that translates, more or less, as follows.

Note that I'm modeling the Fortran 2-dimensional array as a dictionary
keyed by (k, l) tuples. That's easy an convenient, but conceptually a
poor fit and not terribly efficient. If efficiency is an issue (i.e.
much larger values of (k, l), you probably want to be looking at numpy.

Also, "in" is a keyword in python, so I changed that to "value".
There's probably cleaner ways to do this. I did a pretty literal
transliteration.


matrix = {}
value = 0
for k in range(1, 6):
for l in range(1, 6):
value += 1
matrix[(k, l)] = value

for i in range(1, 6):
print ",".join("%5d" % matrix[(i, j)] for j in range(1, 6))

This prints:

1, 2, 3, 4, 5
6, 7, 8, 9, 10
11, 12, 13, 14, 15
16, 17, 18, 19, 20
21, 22, 23, 24, 25

Or, as the OP may be on the road to numpy anyway:
array([[ 1, 2, 3, 4, 5],
[ 6, 7, 8, 9, 10],
[11, 12, 13, 14, 15],
[16, 17, 18, 19, 20],
[21, 22, 23, 24, 25]])1, 2, 3, 4, 5
6, 7, 8, 9, 10
11, 12, 13, 14, 15
16, 17, 18, 19, 20
21, 22, 23, 24, 25