I'm new to Python but am very confused as to how this code works:
Correct code I don't understand:
I don't understand how in the function, you can just write ".org' in domain to capture whether the referrer_domain is an organization. I thought you would have to filter via .str.contains() to be able to see if the domain includes .org or .com.
I originally coded:
dot_org = data[data['referrer_domain'].str.contains('.org')
dot_com = data[data['referrer_domain'].str.contains('.com')
def domain_type(type):
if type in dot_org['referrer_domain']:
return 'organization'
elif type in dot_com['referrer_domain']:
return 'company'
else:
return 'other'
data['new_column'] = data['referrer_domain'].apply(domain_type)
But this ended up labeling all of the rows in the new column I created as "other".
Is anyone able to explain why the code in the picture works, but why the code above doesn't?
First, you should not use type as a variable name, because it's a reserved word.
Aside from that, there is no str.contains method, at least not in plain Python. The official way of checking if a string contains another string is using the in operator.
Related
I am trying to move over some API calls I had working over to python from postman, I am having some issues making a variable callable by my next get request. I've found a few things while searching but never found a 100% answer on how to call the environment variable in the get request...is it correct to use the {{TEST}} to call that var. Example below.
Test = Myaccoount
Json_Response_Test = requests.get('https://thisisjustatesttoaccessmyaccount/{{Test}}')
How can I carry over Test into the request?
Your code will almost work as you have it if you use the feature of newer version of Python called "format strings". These are denoted by a f at the beginning of the string. This works like this in such versions of Python:
Test = Myaccoount
Json_Response_Test = requests.get(f'https://thisisjustatesttoaccessmyaccount/{Test}')
as long as Myaccoount is a valid value that can be expanded by Python into the format string.
If you're using an older version of Python, you could do something like this:
Test = Myaccoount
Json_Response_Test = requests.get('https://thisisjustatesttoaccessmyaccount/{}'.format(Test))
BTW, it's not good form to use uppercase first character names for variables. The convention is to use uppercase only for class and type names, and use lowercase for variable and field names.
So I am very new to programming and I am using python gspread module to use a google sheet as a database.
There's a function for said module called sheet.findall(query, row, column), and this is great, but there's one issue, the query parameter will only look for an exact match, meaning that if i write "DDG", it will not get me the info from a cell with the value of "DDG-87".
After reading the documentation, I found out that you can use python regular expressions to structure the query parameter, so I did that, but there's a problem; The second parameter in re.findall is WHERE to look for, but the issue is that the whole variable is the action of searching, example shown below:
search = sheet.findall(re.findall("[DDG]", The where to search goes here))
As you can see, the whole variable (SEARCH) is the search function, and therefore, I can not specify where to search.
I have tried to set the second parameter of the regex as (SEARCH), but obviously, it won't work.
Any idea or a clue on how I can set the second parameter of re.findall() to be self, or what I can do so that the function doesn't search for an exact match, but if it contains the text?
Thank you.
From the gspread docs:
Find all cells matching a regexp:
criteria_re = re.compile(r'(Small|Room-tiering) rug')
cell_list = worksheet.findall(criteria_re)
So the following should work in your case:
criteria_re = re.compile(r'DDG.*')
search = sheet.findall(criteria_re)
I am not well versed at python at all. I was asked to review someone else's python script that uses search ldap entries. Btw - I can't reach out to original developer for some reason and before it is deployed + tested visual code checking is required. With that constraints in mind, allow me to proceed.
import ldap3
from ldap3 import Server,Connection, ALL
conn = Connection(....)
conn.search(....)
for entry in conn.entries:
if (len(entry['cn']) > 0):
....
name = entry['name']
if name:
user_name = str(name)
else:
user_name = "Bob"
First question is len(entry['cn']) > 0 I like to interpret it as checking the length of characters of returned cn value from ldap e.g. cn=bob,ou=people,ou=foocomany. I am pretty sure entry['cn'] is NOT string type but I don't know what data type it represents. Can you tell me what type it is?
My 2nd + 3rd questions are not directly related to the original question, but plz bear with me asking for them with grace.
My 2nd question is, if that assumption is correct, entry['cn'] should be converted to string type like str(entry['cn']). Then check its length?
My 3rd question is on if stmt. I like to interpret it as if name is not null or if name is not None in pythonic way. Did I interpret it correctly? If so I should replace it as if not (name is None) would work? I googled on it to get that stmt.
Given the context and code provided, it looks like this snippet is using the ldap3 library.
From the relevant documentation, conn.entries should be a list of Entry objects.
This means that entry['cn'] should be returning an Attribute. Doing a bit of source diving, this appears to just be a fancy list with writable flags. len(entry['cn']) > 0 ends up calling this method, which just returns the number of values that attribute has. It being greater than 0 just ensuring that the cn is, in fact, set.
I would like to use a list of int to be used in a query as below:
db.define_table('customer',Field('name'),Field('cusnumber','integer'))
def custmr():
listOfNumbers=[22,12,76,98]
qry=db(db.customer.cusnumber==listOfNumbers).select(db.customer.name)
print qry
this arise an issue that the only accepted data type in the query is int or str.
Is there any way to avoid this issue (preferably by not using for loop)
Regards
It is really difficult to know what you're trying to ask, but from the syntax of db.define_table(...), I take a wild guess you're on web2py and trying to do a query which fetch any int in your listOfNumbers.
You may use contains attribute like this:
# if all=True, cusnumber will need to contains all listOfNumbers, False means any
qry=db(db.customer.cusnumber.contains(listOfNumbers, all=False)).select(db.customer.name)
You can read more in details in HERE
As OP replied that contains only works for string, I'm going to suggest using for/loop will be a better answer:
listOfNumbers=[22,12,76,98]
for each in listOfNumbers:
qry=db(db.customer.cusnumber==each).select(db.customer.name)
# ... do your stuff or whatever ...
Assuming you want the set of records for which the cusnumber is in listOfNumbers, you should use the .belongs method:
qry = db(db.customer.cusnumber.belongs(listOfNumbers)).select(db.customer.name)
I'm probably going about this all wrong but...
I am trying to populate a QTreeView from SQL data - using QAbstractItemModel (and having a great deal of trouble understanding it tbh). One of the tutorials I am following (the simplest) populates the Tree by simply calling new instances of the 'Node' and generating the model from the list. The Node has a name and a parentnode (as below). This is OK where you are generating the data within the program. This I can just about follow :)
However, I want to bring the data in from the table and use a string to identify the correct parentnode - mainly because if I am iterating over the records I won't be able to name each one using a separate variable(?). It will be for x in recs: node = Node("name", parentnode).
When I do this, I get the obvious error message that the string isnt the correct object and has no methods. Is there a way of using a string derived from my table to identify the correct 'parent' object (either that, or could somebody point me in the direction of a very basic Qtreeview model tutorial designed for very enthusiastic, but not necessary gifted learners).
rootNode = Node("Hips")
childNode0 = TransformNode("RightPirateLeg", rootNode)
childNode1 = Node("RightPirateLeg_END", childNode0)
childNode2 = CameraNode("LeftFemur", rootNode)
childNode3 = Node("LeftTibia", childNode2)
childNode4 = Node("LeftFoot", childNode3)
childNode5 = LightNode("LeftFoot_END", childNode4)
I realise that I am probably running before I can walk here and apologise in advance for my ignorance.
Are the strings the names of global variables? If so, you can access the value refenced by the global variable with globals()['name'], (replacing 'name' with the string name of the variable of course.)
Or, better yet, instead of littering variable names all over your global namespace
you could use a dict:
node={}
node['rootNode']=Node('Hips')
node['childNode0']=TransformNode('RightPirateLeg',node['rootNode'])
...
This makes it very easy to map between string names and values.