concatenation of fields

[Bradmayger]

I am attempting to concatenate fields in a feature class.

The item to be calculated is T_GDE_con

and has 18 possible single entries, plus the concatenated entries, from 18 fields.

Any insight please ?

update([GDE_01C], [GDE_01D], [GDE_02C], [GDE_02D], [GDE_03C], [GDE_03D], [GDE_04D], [GDE_04E], [GDE_04F], [GDE_04G], [GDE_05C], [GDE_05D], [GDE_07C], [GDE_07D], [GDE_08C], [GDE_08D], [GDE_09C], [GDE_09D])

PRE LOGIC script code

def update(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r):

    strArray = [ ]

    if a != ' ':

        strArray.append(a + "/")

    if b != ' ':

        strArray.append(b + "/")

    if c != ' ':

        strArray.append(c + "/")

    if d != ' ':

        strArray.append(d + "/")

    if e != ' ':

        strArray.append(e + "/")

    if f != ' ':

        strArray.append(f + "/")

    if g != ' ':

        strArray.append(g + "/")

    if h != ' ':

        strArray.append(h + "/")

    if i != ' ':

        strArray.append(i + "/")

    if j != ' ':

        strArray.append(j + "/")

    if k != ' ':

        strArray.append(k + "/")

    if l != ' ':

        strArray.append(l + "/")

    if m != ' ':

        strArray.append(m + "/")

    if n != ' ':

        strArray.append(n + "/")

    if o != ' ':

        strArray.append(o + "/")

    if p != ' ':

        strArray.append(p + "/")

    if q != ' ':

        strArray.append(q + "/")

    if r != ' ':

        strArray.append(r + "/")

    str = "".join(strArray)

    str = str.strip()

    str = str.lstrip("/")

    str = str.rstrip("/")

    return str

[DanPatterson_Retired]

Can we assume it didn't work? or do you have an error or a sample output?

You don't appear to be using the python parser for the field calculator

The script will probably fail if any of the inputs are not text/string and null values in the fields will cause issues as well.

Beyond that, the expression could be simplified if you can answer the questions on the first line

[JoeBorgione]

I don't see what you are trying to accomplish, but besides that you might want to replace all those if statements with elif.  Also, str as a variable is problematic;  using a function name spells trouble for me.