Returning a date as string

[=?iso-8859-1?B?Qmr2cm4gS2VpbA==?=]

Hello pythons,

I have little problem with understanding conversions in python. I've
written a little class - nothing much, just to try out Python a little
- containing the following method:

def __repr__(self):
"""Serializ es the note.

Currently the format of notes isn't decided upon. XML output
is
projected."""
return "Due: " + str(self.dateDu e) + \
"\nDate: " + str(self.dateCr eated) + \
"\nSubject: " + self.subject + \
"\n" + self.content

The fields "dateDue" and "dateCreate d" contain datetime.date objects.
Now when I try to serialize the whole thing:

>>myNote

Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "notes.py", line 81, in __repr__
return "Due: " + str(self.dateDu e) + \
TypeError: cannot concatenate 'str' and 'datetime.date' objects

I tryed different variant before I wrapped "self.dateD ue" in a str()
constructor:
I tried to put it in brackets, or call its .isoformat() method.
Nothing works. It still complains that I was trying to concatenate a
string with a date, but I really wanna concatenate a string with a
string!

Could anyone please tell me what I am doing wrong?

Greetings,
Björn

[7stud]

Re: Returning a date as string

On Apr 21, 2:59 pm, Björn Keil <abgr...@silber drache.netwrote :

Hello pythons,
>
I have little problem with understanding conversions in python. I've
written a little class - nothing much, just to try out Python a little
- containing the following method:
>
def __repr__(self):
"""Serializ es the note.
>
Currently the format of notes isn't decided upon. XML output
is
projected."""
return "Due: " + str(self.dateDu e) + \
"\nDate: " + str(self.dateCr eated) + \
"\nSubject: " + self.subject + \
"\n" + self.content
>
The fields "dateDue" and "dateCreate d" contain datetime.date objects.
Now when I try to serialize the whole thing:
>

>myNote

>
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "notes.py", line 81, in __repr__
return "Due: " + str(self.dateDu e) + \
TypeError: cannot concatenate 'str' and 'datetime.date' objects
>
I tryed different variant before I wrapped "self.dateD ue" in a str()
constructor:
I tried to put it in brackets, or call its .isoformat() method.
Nothing works. It still complains that I was trying to concatenate a
string with a date, but I really wanna concatenate a string with a
string!
>
Could anyone please tell me what I am doing wrong?
>
Greetings,
Björn

This works for me:

import datetime

class MyDate(object):
def __init__(self, date):
self.d = date
def __repr__(self):
return str(self.d)

md = MyDate(datetime .date.today())
print "the result is: " + repr(md)

##output: the result is: 2007-04-21

[John Machin]

Re: Returning a date as string

On Apr 22, 6:59 am, Björn Keil <abgr...@silber drache.netwrote :

Hello pythons,
>
I have little problem with understanding conversions in python. I've
written a little class - nothing much, just to try out Python a little
- containing the following method:
>
def __repr__(self):
"""Serializ es the note.
>
Currently the format of notes isn't decided upon. XML output
is
projected."""

Insert here:

print "Due: %r" % self.dateDue
print "Created: %r" % self.dateCreate d
print "Subject: %r" % self.subject
print "Content: %r % self.content

return "Due: " + str(self.dateDu e) + \
"\nDate: " + str(self.dateCr eated) + \
"\nSubject: " + self.subject + \
"\n" + self.content
>
The fields "dateDue" and "dateCreate d" contain datetime.date objects.
Now when I try to serialize the whole thing:
>

>myNote

>
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "notes.py", line 81, in __repr__
return "Due: " + str(self.dateDu e) + \
TypeError: cannot concatenate 'str' and 'datetime.date' objects
>
I tryed different variant before I wrapped "self.dateD ue" in a str()
constructor:
I tried to put it in brackets, or call its .isoformat() method.
Nothing works. It still complains that I was trying to concatenate a
string with a date, but I really wanna concatenate a string with a
string!
>
Could anyone please tell me what I am doing wrong?

Not showing us the *whole* code that you are executing.

Suggestions:
(1) Maybe dates have crept into self.subject and self.content. The
print statements above should show exactly what you've got.

(2) Maybe you didn't save it before you ran it. Maybe you forgot to
reload(yourModu le). Try making up the smallest possible script that
demonstrates your problem. Get out of whatever IDE you may be using
and go to the OS command-line prompt. Use type (windows) or cat (*x)
to print your script on the console. Run your script. Copy the console
contents and paste it into your mail/news client.

HTH,
John

[=?iso-8859-1?B?Qmr2cm4gS2VpbA==?=]

Re: Returning a date as string

On 22 Apr., 02:26, John Machin <sjmac...@lexic on.netwrote:

On Apr 22, 6:59 am, Björn Keil <abgr...@silber drache.netwrote :
>

Hello pythons,

>

I have little problem with understanding conversions in python. I've
written a little class - nothing much, just to try out Python a little
- containing the following method:

>

def __repr__(self):
"""Serializ es the note.

>

Currently the format of notes isn't decided upon. XML output
is
projected."""

>
Insert here:
>
print "Due: %r" % self.dateDue
print "Created: %r" % self.dateCreate d
print "Subject: %r" % self.subject
print "Content: %r % self.content
>
>
>

return "Due: " + str(self.dateDu e) + \
"\nDate: " + str(self.dateCr eated) + \
"\nSubject: " + self.subject + \
"\n" + self.content

>

The fields "dateDue" and "dateCreate d" contain datetime.date objects.
Now when I try to serialize the whole thing:

>

>>myNote

>

Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "notes.py", line 81, in __repr__
return "Due: " + str(self.dateDu e) + \
TypeError: cannot concatenate 'str' and 'datetime.date' objects

>

I tryed different variant before I wrapped "self.dateD ue" in a str()
constructor:
I tried to put it in brackets, or call its .isoformat() method.
Nothing works. It still complains that I was trying to concatenate a
string with a date, but I really wanna concatenate a string with a
string!

>

Could anyone please tell me what I am doing wrong?

>
Not showing us the *whole* code that you are executing.
>
Suggestions:
(1) Maybe dates have crept into self.subject and self.content. The
print statements above should show exactly what you've got.
>
(2) Maybe you didn't save it before you ran it. Maybe you forgot to
reload(yourModu le). Try making up the smallest possible script that
demonstrates your problem. Get out of whatever IDE you may be using
and go to the OS command-line prompt. Use type (windows) or cat (*x)
to print your script on the console. Run your script. Copy the console
contents and paste it into your mail/news client.
>
HTH,
John

Ah, yes point (2) is it. I didn't do "reload" but simply "del
mylibrary, myobject" and the import the library again.
In effect the code quoted in the error message was up to date but the
code used was still the cached bytecode. Some problems do in fact
solve themselves when you sleep a night over it, it seems.

Thank you. Good fight, good night!