MIMEMultipart, MIMEText, MIMEBase, and payloads for sending email with file attachment in Python -

-

without prior knowledge of mime, tried learned how write python script send email file attachment. after cross-referencing python documentation, stack overflow questions, , general web searching, settled following code [1] , tested working. 

import smtplib email.mimemultipart import mimemultipart email.mimetext import mimetext email.mimebase import mimebase email import encoders  fromaddr = "your email" toaddr = "email address send to"  msg = mimemultipart()  msg['from'] = fromaddr msg['to'] = toaddr msg['subject'] = "subject of email"  body = "text want send"  msg.attach(mimetext(body, 'plain'))  filename = "name of file extension" attachment = open("path of file", "rb")  part = mimebase('application', 'octet-stream') part.set_payload((attachment).read()) encoders.encode_base64(part) part.add_header('content-disposition', "attachment; filename= %s" % filename)  msg.attach(part)  server = smtplib.smtp('smtp.gmail.com', 587) server.starttls() server.login(fromaddr, "your password") text = msg.as_string() server.sendmail(fromaddr, toaddr, text) server.quit()

  1. i have rough idea of how script works now, , worked out following workflow. please let me know how accurate flowchart(?) is. 

     as.string()    |  +------------mimemultipart                 |                                                |---content-type                 |                                   +---header---+---content disposition                 +----.attach()-----+----mimebase----|                                    |                +---payload (to encoded in base64)                                  +----mimetext

  2. how know when use mimemultipart, mimetext , mimebase? seems complicated question, maybe offer general rules-of-thumb me?

  3. i read mime has tree-like structure[2] , mean mimemultipart @ top?
  4. in first code block, mimemultipart encodes ['from'], ['to'], , ['subject'], in python documentation, mimetext can used encode ['from'], ['to'], , ['subject']. how decide 1 use?
  5. what "payload"? content transported? if so, kind of content include (i noticed body text , attachment treated payloads)? thought easy question not find satisfying, reliable, , simple answer.
  6. is true although mime can attach file formats simpler texts, @ end encoding, header information, , payloads turned strings can passed .sendmail()?

[1]http://naelshiab.com/tutorial-send-email-python/
[2]http://blog.magiksys.net/generate-and-send-mail-with-python-tutorial


Comments

Post a Comment

Popular posts from this blog

Spring Boot + JPA + Hibernate: Unable to locate persister -

-
i trying work entity inside request method of spring boot application. entity in project , pom.xml has dependencies it. why error message?: org.hibernate.unknownentitytypeexception: unable locate persister: com.ric.bill.model.bs.par package com.ric.web; import java.util.concurrent.atomic.atomiclong; import javax.persistence.entitymanager; import javax.persistence.persistencecontext; import net.sf.ehcache.cachemanager; import net.sf.ehcache.management.cache; import net.sf.ehcache.management.cachestatistics; import org.hibernate.stat.statistics; import org.springframework.beans.factory.annotation.autowired; import org.springframework.boot.autoconfigure.domain.entityscan; import org.springframework.cache.annotation.enablecaching; import org.springframework.transaction.annotation.enabletransactionmanagement; import org.springframework.transaction.annotation.propagation; import org.springframework.transaction.annotation.transactional; import org.springframework.web.bind.annotati
Read more

go - Golang: panic: runtime error: invalid memory address or nil pointer dereference using bufio.Scanner -

-
i implementing go program uses bufio.scanner , bufio.writer have packaged code follows package main import ( "fmt" "player/command" "strings" ) func main() { //enter code here. read input stdin. print output stdout commands.scanner.scan() { //scan new line , send comand variable check command exist or not input := strings.split(strings.trim(commands.scanner.text(), " "), " ") command := input[0] if command == "" { fmt.printf("$ %s:", commands.pwd) continue } if !commands.commands[command] { commands.throwerror("cannot recognize input.") } else { commands.execute(command, input[1:], nil) } fmt.printf("$ %s:", commands.pwd) } } i using init.go file in main package follows package main import ( "flag" "player/sourc
Read more

c - double free or corruption (fasttop) -

-
this code reads null terminated string file (file containing null terminated strings & should provide index wanted string). error: *** error in `./main': double free or corruption (fasttop): 0x090a4a80 *** aborted code: char *tmp_realloc=null; char *sstring=null; int i=1; /*set file pointer point string*/ fseek(fh,index,seek_set); sstring=(char*)malloc(sizeof(char)); if(sstring == null) return null; tmp_realloc=sstring; while( (*(sstring+i-1)=(char)fgetc((file*)fh)) != 0x0 ) { /*reallocate more memory*/ tmp_realloc=(char*)realloc((char*)sstring,++i); /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strcpy((char*)tmp_realloc,(char*)sstring); free(sstring); sstring=tmp_realloc; } } could tell me pointer causing issue (& reason) ? remove part /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strc
Read more