Python, EasyGui and SAP

Original Post: Tasting the mix of Python and SAP - Volume 2

This blog post continues my Python learning adventures, and as I love Web Micro Frameworks, I also love simple graphical frameworks...this time, we're going to use EasyGui, which is wrapper for Tkinter which is also a layer for Tk.

So what's the fuzz about EasyGui? Well...it's an easy way to do GUI's...got it? Easy-Gui...

Anyway, it's not as complete as TKinter but it's for sure easier to learn and easier to develop. Enough talk...let's see the source code...

First, I used Yaml again to hide most of the connection parameters from the user.

ashost: localhost
sysnr: "00"
client: "001"
lang: EN
trace: 1
loglevel: warn

SE16_EasyGui.py

from easygui import *
import sapnwrfc

TITLE = "Python (Easy Gui) & SAP - SE16 Emulator"
conn = ""
table = ""


def Login():
    global conn
    msg = "Python (Easy Gui) & SAP - SE16 Emulator"
    title = "Login"
    fieldNames = ["User", "Passwd"]
    fieldValues = []
    fieldValues = multpasswordbox(msg, title, fieldNames)
    user, passwd = fieldValues[0], fieldValues[1]
    sapnwrfc.base.config_location = "sap.yml"
    sapnwrfc.base.load_config()
    conn = sapnwrfc.base.rfc_connect({'user': user, 'passwd': passwd})
    ChooseTable()


def ChooseTable():
    global table
    table = enterbox("Show Table")
    if table != " ":
        ShowTable()


def ShowTable():
    global conn, table
    fields = []
    fields_name = []
    fields_length = []
    output = []
    header = ""
    lines = ""
    separator = ""
    counter = 0
    func_disc = conn.discover("RFC_READ_TABLE")
    func = func_disc.create_function_call()
    func.QUERY_TABLE(table)
    func.DELIMITER("|")
    func.invoke()
    data_fields = func.DATA.value
    data_names = func.FIELDS.value
    long_fields = len(func.DATA())
    long_names = len(func.FIELDS())

    for line in range(0, long_fields):
        fields.append(data_fields[line]["WA"].strip())
    for line in range(0, long_names):
        counter = counter + 1
        fields_name.append(data_names[line]["FIELDNAME"].strip())
        fields_length.append(data_names[line]["LENGTH"].strip())

    for line in range(0, long_names):
        field_name = fields_name[line]
        field_length = fields_length[line]
        if len(field_name) > field_length:
            field_length = len(field_name)
        field_length = int(field_length) - len(field_name)
        spaces = " " * int(field_length)
        counter = counter + len(field_name) + len(spaces)
        header = header + field_name + spaces + "|"

    separator = "-" * counter
    output.append(header)
    output.append(separator)

    for line in range(0, long_fields):
        lines = ""
        field_length = ""
        spaces = ""
        data_split = fields[line].split("|")
        for line in range(0, long_names):
            field_name = fields_name[line]
            field_length = fields_length[line]
            if len(field_name) > int(field_length):
                field_length = len(field_name)
                field_length = int(field_length) - 
                               len(data_split[line])
            else:
                field_length = 0
            spaces = " " * int(field_length)
            lines = lines + data_split[line] + spaces + "|"
        output.append(lines)


    codebox("", TITLE, "\n".join(output))

if __name__ == "__main__":
    Login()

Now, some images of course -:)





Hope you like this one...see ya next time...

Greetings,

Blag.