Scientific Notation formatting in Python
0
How can get following formatting (input values are always less than 0.1):
> formatting(0.09112346)
0.91123E-01
> formatting(0.00112346)
0.11234E-02
and so on.
I am looking for some elegant solution. I am already using a custom function given below:
def formatting(x, prec=5):
tup = x.as_tuple()
digits = list(tup.digits[:prec])
dec = ''.join(str(i) for i in digits)
exp = x.adjusted()
return '0.decEexp'.format(dec=dec, exp=exp)
python formatting scientific-notation
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
add a comment |
0
How can get following formatting (input values are always less than 0.1):
> formatting(0.09112346)
0.91123E-01
> formatting(0.00112346)
0.11234E-02
and so on.
I am looking for some elegant solution. I am already using a custom function given below:
def formatting(x, prec=5):
tup = x.as_tuple()
digits = list(tup.digits[:prec])
dec = ''.join(str(i) for i in digits)
exp = x.adjusted()
return '0.decEexp'.format(dec=dec, exp=exp)
python formatting scientific-notation
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00
add a comment |
0
0
0
How can get following formatting (input values are always less than 0.1):
> formatting(0.09112346)
0.91123E-01
> formatting(0.00112346)
0.11234E-02
and so on.
I am looking for some elegant solution. I am already using a custom function given below:
def formatting(x, prec=5):
tup = x.as_tuple()
digits = list(tup.digits[:prec])
dec = ''.join(str(i) for i in digits)
exp = x.adjusted()
return '0.decEexp'.format(dec=dec, exp=exp)
python formatting scientific-notation
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
How can get following formatting (input values are always less than 0.1):
> formatting(0.09112346)
0.91123E-01
> formatting(0.00112346)
0.11234E-02
and so on.
I am looking for some elegant solution. I am already using a custom function given below:
def formatting(x, prec=5):
tup = x.as_tuple()
digits = list(tup.digits[:prec])
dec = ''.join(str(i) for i in digits)
exp = x.adjusted()
return '0.decEexp'.format(dec=dec, exp=exp)
python formatting scientific-notation
python formatting scientific-notation
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
edited Nov 13 '18 at 7:55
ARK4579
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
asked Nov 13 '18 at 6:09
ARK4579ARK4579
10318
10318
You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00
add a comment |
You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00
You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00
add a comment |
1 Answer
1
active
oldest
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0
You can use the format() function. The format specification mentions it there:
'E' - Exponent notation. Same as 'e' except it uses an upper case ‘E’ as the separator character.
>>> print(':.5E'.format(0.09112346))
9.11235E-02
>>> print(':.5E'.format(0.00112346))
1.12346E-03
However it isn't quite like the output you have in your answer. If the above is not satisfactory, then you might use a custom function to help (I'm not the best at this, so hopefully it's ok):
def to_scientific_notation(number):
a, b = ':.4E'.format(number).split('E')
return ':.5fE:+03d'.format(float(a)/10, int(b)+1)
print(to_scientific_notation(0.09112346))
# 0.91123E-01
print(to_scientific_notation(0.00112346))
# 0.11234E-02
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You can use the format() function. The format specification mentions it there:
'E' - Exponent notation. Same as 'e' except it uses an upper case ‘E’ as the separator character.
>>> print(':.5E'.format(0.09112346))
9.11235E-02
>>> print(':.5E'.format(0.00112346))
1.12346E-03
However it isn't quite like the output you have in your answer. If the above is not satisfactory, then you might use a custom function to help (I'm not the best at this, so hopefully it's ok):
def to_scientific_notation(number):
a, b = ':.4E'.format(number).split('E')
return ':.5fE:+03d'.format(float(a)/10, int(b)+1)
print(to_scientific_notation(0.09112346))
# 0.91123E-01
print(to_scientific_notation(0.00112346))
# 0.11234E-02
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
add a comment |
0
You can use the format() function. The format specification mentions it there:
'E' - Exponent notation. Same as 'e' except it uses an upper case ‘E’ as the separator character.
>>> print(':.5E'.format(0.09112346))
9.11235E-02
>>> print(':.5E'.format(0.00112346))
1.12346E-03
However it isn't quite like the output you have in your answer. If the above is not satisfactory, then you might use a custom function to help (I'm not the best at this, so hopefully it's ok):
def to_scientific_notation(number):
a, b = ':.4E'.format(number).split('E')
return ':.5fE:+03d'.format(float(a)/10, int(b)+1)
print(to_scientific_notation(0.09112346))
# 0.91123E-01
print(to_scientific_notation(0.00112346))
# 0.11234E-02
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
add a comment |
0
0
0
You can use the format() function. The format specification mentions it there:
'E' - Exponent notation. Same as 'e' except it uses an upper case ‘E’ as the separator character.
>>> print(':.5E'.format(0.09112346))
9.11235E-02
>>> print(':.5E'.format(0.00112346))
1.12346E-03
However it isn't quite like the output you have in your answer. If the above is not satisfactory, then you might use a custom function to help (I'm not the best at this, so hopefully it's ok):
def to_scientific_notation(number):
a, b = ':.4E'.format(number).split('E')
return ':.5fE:+03d'.format(float(a)/10, int(b)+1)
print(to_scientific_notation(0.09112346))
# 0.91123E-01
print(to_scientific_notation(0.00112346))
# 0.11234E-02
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
You can use the format() function. The format specification mentions it there:
'E' - Exponent notation. Same as 'e' except it uses an upper case ‘E’ as the separator character.
>>> print(':.5E'.format(0.09112346))
9.11235E-02
>>> print(':.5E'.format(0.00112346))
1.12346E-03
However it isn't quite like the output you have in your answer. If the above is not satisfactory, then you might use a custom function to help (I'm not the best at this, so hopefully it's ok):
def to_scientific_notation(number):
a, b = ':.4E'.format(number).split('E')
return ':.5fE:+03d'.format(float(a)/10, int(b)+1)
print(to_scientific_notation(0.09112346))
# 0.91123E-01
print(to_scientific_notation(0.00112346))
# 0.11234E-02
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
edited Nov 13 '18 at 8:01
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
answered Nov 13 '18 at 7:29
JerryJerry
58k1068102
58k1068102
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
add a comment |
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
yes, sorry but, that's not the output I am looking for. I am already using a custom function (in my answer)
– ARK4579
Nov 13 '18 at 7:37
1
1
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
@ARK4579 Um, sorry, did you read the whole answer? The 2nd part gives the format you asked for (0.91123E-01 and 0.11234E-02) or am I missing something?
– Jerry
Nov 13 '18 at 7:39
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
yes, it does. thanks. :) but i am already using a custom function. :)
– ARK4579
Nov 13 '18 at 7:53
add a comment |
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You mean how to get a specific notation when printing a number?
– toti08
Nov 13 '18 at 6:52
i think yes. (i am not very clear on the concept of "specific notation")
– ARK4579
Nov 13 '18 at 6:57
Yeah, sorry, I mean printing the number with different notation, like exponential notation, or specifying only a certain amount of digits after the comma, and so on...
– toti08
Nov 13 '18 at 7:00