The purpose of ifsugar is to make python source code be ++easier understood by human++.
ifsugar is only supported by ++python3.5 or above++, because the matrix multiplication operator: a @ b is not available in lower python version.
pip3 install ifsugar
from ifsugar import _if, _try, _times
# or you can: from ifsugar import *
if __name__ == "__main__":
if "test _if":
x = 42
x @= 24 @_if([1, 2, 3])
assert x == 24
x @= 42 @_if({})
assert x == 24
if "test _try":
x = None
with _try:
x = 3 / 0
assert x is None
with "successful code" @_try:
y = -9
assert y == -9
if "test _times":
n = []
m = list(n.append(0) or len(n) for _ in 5 @_times)
assert m == [1, 2, 3, 4, 5]
for _ in 3 @_times:
m.pop()
n.pop()
assert m == [1, 2] and n == [0, 0]
x @= A @_if(B)
is equivalent to x = A if B else x or if B: x = A
When reading a source code, it is so important to know ++what you are going to do++ BEFORE ++how to do++.
That is why Ruby supports code if condition and code unless conditional syntax. For example:
#!/usr/bin/ruby
$var = 1
print "1 -- Value is set\n" if $var
print "2 -- Value is set\n" unless $var
Since unless is not intuitive (my personal opinion), ifsugar doesn't adopt _unless
both x and A in x @= A @_if(B) cannot be Matrix type.
with _try:
...code...
is equivalent to
try:
...code...
except:
pass
with "I am comment" @_try:
...code...
is equivalent to
if "I am comment":
try:
...code...
except:
pass
for _ in n @_times:
...code...
is equivalent to
import itertools
for _ in itertools.repeat(None, n):
...code...
i.e. n @_times is equivalent to itertools.repeat(None, n)
_as @ globals() # init once and at beginning
... ...
[({} @_as).clear(), _.setdefault(1, 9)]
is equivalent to
[_ := {}, _.clear(), _.setdefault(1, 9)]
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