Version 2

new version of pytutils

.gitignore

@@ -1,2 +1,6 @@
 
 __pycache__/
+
+\.idea/
+
+*.pyc

__init__.py

@@ -4,47 +4,49 @@ r"""
 To use, simply 'import pyutils' 
 
 shellExecute can receive a cmd as str or arr example 
-    >>> pyutils.shellExecute('date')
+    >>> pyutils.shell_execute('date')
     (b'mi\xc3\xa9 ene 30 11:35:00 CST 2019\n', b'')
-    >>> pyutils.shellExecute(['echo',"'hola mundo'"])
+    >>> pyutils.shell_execute(['echo',"'hola mundo'"])
     (b"'hola mundo'\n", b'')
+        
 """
 
 __author__ = 'Josue Gomez <jgomez@jesrat.com>'
+__maintainer__ = "Josue Gomez"
+__email__ = "jgomez@binkfe.com"
+__license__ = "GPL"
 __version__ = '2.0'
-__all__ = [ 'resizeTTY', 'shellExecute', 'progressBar', 'getSensible', ]
-__status__  = "production"
-__date__    = "30 January 2019"
-
-import os, sys, subprocess
-from dotenv import load_dotenv 
+__all__ = ['', ]
+__status__ = "production"
+__date__ = "30 January 2019"
 
 
-result = os.environ.get('MYENV')
-load_dotenv(result)
+import sys
+import subprocess
 
-def getSensible(key):
-    return os.environ.get(key)
 
 def pysyspath():
     print(sys.version)
     for pth in sys.path:
         print(pth)
 
-def resizeTTY(rows, cols):
+
+def resize_tty(rows, cols):
     sys.stdout.write("\x1b[8;{rows};{cols}t".format(rows=rows, cols=cols))
 
-def shellExecute(cmd,stdin=None):
-    rpt = subprocess.Popen(cmd, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-    stdout, stderr = rpt.communicate()
-    return stdout, stderr
 
-def progressBar(progress, total, status=''):
-    ttySize = shellExecute(['stty','size'])
-    ttySize = ttySize[0].decode().split(' ')
-    barLen = round(int(ttySize[1])/100*90)
-    fillLen = int(round(barLen * progress / float(total)))
+def shell_execute(cmd, stdin=None):
+    proc = subprocess.Popen(cmd, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    stdout, stderr = proc.communicate()
+    return stdout, stderr, proc.returncode
+
+
+def progress_bar(progress, total, status=''):
+    ttysize = shell_execute(['stty','size'])
+    ttysize = ttysize[0].decode().split(' ')
+    barlen = round(int(ttysize[1])/100*90)
+    fill_len = int(round(barlen * progress / float(total)))
     percent = round(100.0 * progress / float(total), 1)
-    bar = '■' * fillLen + '-' * (barLen - fillLen)
+    bar = '■' * fill_len + '-' * (barlen - fill_len)
     sys.stdout.write('[%s] %s%s ...%s\r' % (bar, percent, '%', status))
     sys.stdout.flush()

localenv.py

@@ -0,0 +1,55 @@
+import os
+import sys
+
+
+class NoEnvironmentFile(Exception):
+    pass
+
+
+class LocalEnv:
+    def __init__(self):
+        self.file = None
+        self.data = {}
+
+    def load(self, file=None):
+        """
+        If no file is defined, the .env file will be searched
+        in invoker module's directory
+        """
+        if file is not None:
+            self.file = file
+        else:
+            self.file = self._invoker()
+
+        if not os.path.isfile(self.file):
+            raise NoEnvironmentFile(f'for file {self.file}')
+
+        with open(self.file) as f:
+            for line in f:
+                line = line.strip()
+                if not line or line.startswith('#') or '=' not in line:
+                    continue
+                key, value = line.split('=', 1)
+                key = key.replace('export', '')
+                key = key.strip()
+                value = value.strip().strip('\'"')
+                self.data[key] = value
+
+    def get(self, key, cast=None):
+        if cast is None:
+            return self.data[key]
+
+        return cast(self.data[key])
+
+    @staticmethod
+    def _invoker():
+        # tip from:
+        # https://github.com/henriquebastos/python-decouple/blob/master/decouple.py
+        # MAGIC! Get the caller's module path.
+        frame = sys._getframe()
+        path = os.path.dirname(frame.f_back.f_back.f_code.co_filename)
+        file = os.path.join(path, '.env')
+        return file
+
+
+localenv = LocalEnv()

oracle.py

@@ -0,0 +1,16 @@
+import cx_Oracle
+
+
+class OraConn:
+    def __init__(self, str_conn, conn_name=None):
+        self.conn = cx_Oracle.connect(str_conn, encoding='UTF-8')
+        self.cur = self.conn.cursor()
+        if conn_name is not None:
+            self.cur.callproc('DBMS_APPLICATION_INFO.SET_MODULE', [conn_name, None])
+        self.cur.close()
+
+    def __enter__(self):
+        return self.conn
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.conn.close()

pysyspath2

@@ -1,8 +1,10 @@
 #!/usr/bin/env python2
 import pyutils as utl
 
+
 def main():
 	utl.pysyspath()
 
+
 if __name__ == "__main__":
 	main()

pysyspath3

@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
 import pyutils as utl
 
+
 def main():
 	utl.pysyspath()
 
+
 if __name__ == "__main__":
 	main()

remote.py

@@ -0,0 +1,52 @@
+import paramiko
+
+
+class RemoteSSH:
+    def __init__(self, auth_info):
+        if not isinstance(auth_info, tuple) or len(auth_info) != 4:
+            raise AssertionError(f'expected tuple (host, port, user, password) instead got {auth_info}')
+
+        self.host = auth_info[0]
+        self.port = auth_info[1]
+        self.user = auth_info[2]
+        self.pssw = auth_info[3]
+        self.sock = paramiko.Transport((self.host, self.port))
+        self.sock.connect(username=self.user, password=self.pssw)
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.sock.close()
+
+
+class RemoteExecute(RemoteSSH):
+    def __init__(self, auth_info):
+        super().__init__(auth_info)
+        self.session = self.sock.open_channel(kind='session')
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.session.close()
+        super().__exit__(exc_type, exc_val, exc_tb)
+
+    def execute(self, command):
+        stdout = b''
+        self.session.exec_command(command)
+        while True:
+            stdout += self.session.recv(4096)
+            if self.session.exit_status_ready():
+                break
+        return stdout
+
+
+class Sftp(RemoteSSH):
+    def __init__(self, auth_info):
+        super().__init__(auth_info)
+        self.sftp = paramiko.SFTPClient.from_transport(self.sock)
+
+    def __enter__(self):
+        return self.sftp
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.sftp.close()
+        super().__exit__(exc_type, exc_val, exc_tb)

sendmail.py

@@ -0,0 +1,61 @@
+import smtplib
+from os.path import basename
+from email.mime.text import MIMEText
+from email.utils import COMMASPACE
+from email.mime.multipart import MIMEMultipart
+from email.mime.application import MIMEApplication
+
+
+class SendMail:
+    def __init__(self, auth_info):
+        if not isinstance(auth_info, tuple) or len(auth_info) != 4:
+            raise AssertionError(f'expected tuple (host, port, user, password) instead got {auth_info}')
+
+        self.host = auth_info[0]
+        self.port = auth_info[1]
+        self.user = auth_info[2]
+        self.pssw = auth_info[3]
+        self.conn = None
+        self.msg = None
+
+    def __enter__(self):
+        self.open_conn()
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.conn.close()
+
+    def open_conn(self):
+        if int(self.port) == 465:
+            self.conn = smtplib.SMTP_SSL(self.host, 465)
+        else:
+            self.conn = smtplib.SMTP(self.host, self.port)
+            self.conn.starttls()
+        self.conn.login(self.user, self.pssw)
+
+    def content(self, fromaddr, toaddr, subject, msg):
+        if not isinstance(toaddr, list):
+            raise AssertionError('destination address should be a list []')
+        self.msg = MIMEMultipart()
+        self.msg['Subject'] = subject
+        self.msg['From'] = fromaddr
+        self.msg['To'] = COMMASPACE.join(toaddr)
+        self.msg.attach(MIMEText(msg, 'html'))
+
+    def attach(self, files):
+        if not isinstance(files, list):
+            raise AssertionError('file(s) to attach should be a list []')
+
+        for file in files:
+            filename = basename(file)
+            with open(file, "rb") as f:
+                fl = MIMEApplication(f.read(), Name=filename)
+            fl['Content-Disposition'] = f'attachment; filename="{filename}"'
+            self.msg.attach(fl)
+
+        print(self.msg)
+
+    def send(self):
+        if self.msg is None:
+            raise Exception('msg is not defined')
+        self.conn.send_message(self.msg)