Try and Execption Doesn't support

[nikhiltree]

can you please upgrade this library for a try and exception?

[cdfmlr]

And how would you express try-except statements in a flowchart? AFAIK, I’m afraid that there’s not a standard or well-known pattern for errors handling in flowcharts. So show me a example or I will keep this open until someone can figure it out.

[nikhiltree]

x=0
try:
  print(x)
except:
  print("An exception occurred")

Diagram Code :
op2=>operation: try:
print(x)
except:
print('An exception occurred')

Actual Graph

[nikhiltree]

it's simple example of try and exception in python

[cdfmlr]

@nikhiltree

Diagram Code :
op2=>operation: try:
print(x)
except:
print('An exception occurred')

Actual Graph

I guess it’s the current running result. And by

And how would you express try-except statements in a flowchart? AFAIK, I’m afraid that there’s not a standard or well-known pattern for errors handling in flowcharts. So show me a example or I will keep this open until someone can figure it out.

I mean what’s your expected diagram (a correction) for it?

[nikhiltree]

you can show a flow diagram like the above picture(consider try and except like if and else statements)

[cdfmlr]

say, an example:

foo = get_foo()
try:
    c = foo.read()
    print(c)
except:
    print("failed")
foo.close()

to express it in a flowchart, my options are:

1. as your illustration, missing start of try:

2. not clear for the transferring point (this looks pretty good, but I disapprove of it because I think it's misleading, for the fact that a program will not jump to the except scope from a "try" line):

3. to express what a try-except do clearly, I have to make it complex:

And we are not even considering the multi-excepts cases which will make things increasingly complex.

[nikhiltree]

Thanks, @cdfmlr for your explanation please let me know if you will update this library for solving this type of problem in the future. I am very glad to use this library.

[cdfmlr]

Thanks, I will do further research on it later, maybe later this month. And I guess a refactor is required to implement this feature (the early design of this lib is horrible 🤦‍♂️) which should take a bit of time.

[nikhiltree]

You are doing great @cdfmlr.

[cdfmlr]

try/except/else/finally is FINALLY implemented in #39.

---

A basic example:

foo()
try:
    result = fetch()
except Exception as e:
    log(e)
bar()

Result: (manually tweaked yes,right for readability, rendered by the built-in --output result.html feature)

---

A complex example:

fuzz()
for i in range(10):
    foo()
    try:
        result = fetch()
        result = normalize(result)
    except Timeout:
        result = cached()
    except Exception as e:
        log(e)
    else:
        process(result)
    finally:
        close()
    bar()
buzz()

Result:

---

See the related README section and #39 for details.

Closing this as completed (it has taken a really long time though). So long, and thanks for all the discuss.