Difference between revisions of "Statistical Algorithms Importer: Python Project FAQ"

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(→‎How to use the input file parameters)
(→‎How to use the input file parameters)
Line 62: Line 62:
 
def load_numbers(numbers,filename):
 
def load_numbers(numbers,filename):
 
     with open(filename,"r") as f:
 
     with open(filename,"r") as f:
−
        lines = f.readlines()
+
         for in_line in f:             
−
        lines
+
−
         for in_line in lines:             
+
 
             [name,number] = string.split(in_line,",")
 
             [name,number] = string.split(in_line,",")
 
             numbers[name] = number
 
             numbers[name] = number

Revision as of 17:31, 10 January 2018

F.A.Q. of Statistical Algorithms Importer (SAI), here are common mistakes we have found in Python Project.


Matplotlib

Matplotlib require the $DISPLAY environment variable which means a running X server. DataMiner service do not allow a running X server session. So your code must be modified: 

#
# author Giancarlo Panichi
#
# Write file image.png
# 
import matplotlib as mpl
mpl.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
....
plt.imshow(image)
plt.savefig('image.png')


How to use the input file parameters

For example we consider Phonebook algorithm:
Phonebook, SAI
Phonebook, SAI
Phonebook, SAI


DataMiner show the Phonebook algorithm in this way:
Phonebook in DataMiner interface, SAI


Python script code in sample:
#
# author Giancarlo Panichi
#
# Phonebook
# 
import sys
import string
 
def print_numbers(numbers):
    print "Telephone Numbers:"
    for x in numbers.keys():
        value="Name: "+x+" Number: "+numbers[x]
        print value,
 
def lookup_number(numbers,name):
    if numbers.has_key(name):
        return "For "+name+" the number is "+numbers[name]
    else:
        return "For "+name+" was not found"
 
def load_numbers(numbers,filename):
    with open(filename,"r") as f:
        for in_line in f:            
            [name,number] = string.split(in_line,",")
            numbers[name] = number
 
def save_result(result,filename):
    with open(filename,"w") as f:
        f.write(result)
 
phonebookFile=sys.argv[1] 
name=sys.argv[2]
phone_list = {}
 
load_numbers(phone_list,phonebookFile)
print_numbers(phone_list)
number=lookup_number(phone_list,name)
print number
save_result(number,"result.txt")


phonebook.csv:
Giancarlo,0123456789
Gianpaolo,9876541234
Paolo,1231410414


phonebook result with Giancarlo:
For Giancarlo the number is 0123456789


Phonebook code:

File:Phonebook.zip

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