Python-SentiStrength/sentistrength/__init__.py at a9c1ee76f0cabe787d006146bf3b6222b45a5e06 · zhunhung/Python-SentiStrength · GitHub

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import subprocess
import shlex
import os.path
import sys
import pandas as pd
from os import getcwd


class PySentiStr:
    def __init__(self):
        pass

    def setSentiStrengthPath(self, ss_Path):
        self.SentiStrengthLocation = ss_Path

    def setSentiStrengthLanguageFolderPath(self, sslf_Path):
        # Ensure it has a forward slash at the end
        if sslf_Path[-1] != "/":
            sslf_Path += "/"
        self.SentiStrengthLanguageFolder = sslf_Path

    def getSentiment(self, df_text, score="scale", keywords=None):
        if not hasattr(self, "SentiStrengthLocation"):
            assert False, "Set path using setSentiStrengthPath(path) function."

        if not hasattr(self, "SentiStrengthLanguageFolder"):
            assert (
                False
            ), "Set path using setSentiStrengthLanguageFolderPath(path) function."

        if type(df_text) != pd.Series:
            df_text = pd.Series(df_text)
        if keywords is not None and type(keywords) != pd.Series:
            keywords = pd.Series(keywords)

        if keywords is not None and not len(df_text) == len(keywords):
            assert False, "You have to pass keywords to all or none texts."

        df_text = df_text.str.replace("\n", "")
        df_text = df_text.str.replace("\r", "")
        conc_text = "\n".join(df_text)
        command_text = (
            "java -jar '"
            + self.SentiStrengthLocation
            + "' stdin sentidata '"
            + self.SentiStrengthLanguageFolder
            + "' trinary"
        )
        if keywords is not None:
            command_text = command_text + " keywords '" + ",".join(keywords) + "'"
        p = subprocess.Popen(
            shlex.split(command_text),
            stdin=subprocess.PIPE,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
        )
        b = bytes(conc_text.replace(" ", "+"), "utf-8")
        stdout_byte, stderr_text = p.communicate(b)
        stdout_text = stdout_byte.decode("utf-8")
        stdout_text = stdout_text.rstrip().replace("\t", " ")
        stdout_text = stdout_text.replace("\r\n", "")
        senti_score = stdout_text.split(" ")

        try:
            senti_score = list(map(float, senti_score))
        except:
            raise Exception(stdout_text)

        senti_score = [int(i) for i in senti_score]
        if score == "scale":  # Returns from -4 to 4
            senti_score = [
                sum(senti_score[i : i + 2]) for i in range(0, len(senti_score), 3)
            ]
        elif score == "binary":  # Return 1 if positive and -1 if negative
            senti_score = [
                1 if senti_score[i] >= abs(senti_score[i + 1]) else -1
                for i in range(0, len(senti_score), 3)
            ]
        elif score == "trinary":  # Return Positive and Negative Score and Neutral Score
            senti_score = [
                tuple(senti_score[i : i + 3]) for i in range(0, len(senti_score), 3)
            ]
        elif score == "dual":  # Return Positive and Negative Score
            senti_score = [
                tuple(senti_score[i : i + 2]) for i in range(0, len(senti_score), 3)
            ]
        else:
            return "Argument 'score' takes in either 'scale' (between -1 to 1) or 'binary' (two scores, positive and negative rating)"
        return senti_score