I'm a noob trying to learn python 3 and I'm trying to include the half_age as a string without using directly writing the number 9 as a string but I couldn't figure it out.
I've tried:
print = str(18//2)
print = int(18//2)
print = float(18/2)
my_age = 18
half_age = (18//2)
name = "Kenny!"
greeting = "Kia Ora, "
print(greeting + name)
print("Your age is " + my_age + "and half your age is " + str(half_age ))
print("Your age is " + my_age + "and half your age is " + str(half_age ))
TypeError: can only concatenate str (not "int") to str
Try formatting all of your numbers with str ie.
my_age = 18
half_age = (18//2)
name = "Kenny!"
greeting = "Kia Ora, "
print(greeting + name)
print("Your age is " + str(my_age) + " and half your age is " + str(half_age))
Just use modern f-strings:
my_age = 18
half_age = (18//2)
name = "Kenny"
greeting = "Kia Ora"
print(f'{greeting}, {name}!')
print(f"Your age is {my_age} and half your age is {half_age}")
or
print(f"Your age is {my_age} and half your age is {my_age/2}")
I am pulling text from a tweet using the Twitter API and Python 3.3 and I'm running into the part of the tweet where the tweeter put three symbols in the tweet. They are shown below.
The two flags and the thumbs up seem to be causing the problem. The following is the plain text tweet.
RT #John_Hunt07: Just voted for #marcorubio is Florida! I am ready for a New American Century!! #FLPrimary \ud83c\uddfa\ud83c\uddf8\ud83c\uddfa\ud83c\uddf8\ud83d\udc4d
The following is the code I'm using.
import json
import mysql.connector
import sys
from datetime import datetime
from MySQLCL import MySQLCL
class Functions(object):
"""This is a class for Python functions"""
#staticmethod
def Clean(string):
temp = str(string)
temp = temp.replace("'", "").replace("(", "").replace(")", "").replace(",", "").strip()
return temp
#staticmethod
def ParseTweet(string):
for x in range(0, len(string)):
tweetid = string[x]["id_str"]
tweetcreated = string[x]["created_at"]
tweettext = string[x]["text"]
tweetsource = string[x]["source"]
tweetsource = tweetsource
truncated = string[x]["truncated"]
inreplytostatusid = string[x]["in_reply_to_status_id"]
inreplytouserid = string[x]["in_reply_to_user_id"]
inreplytoscreenname = string[x]["in_reply_to_screen_name"]
geo = string[x]["geo"]
coordinates = string[x]["coordinates"]
place = string[x]["place"]
contributors = string[x]["contributors"]
isquotestatus = string[x]["is_quote_status"]
retweetcount = string[x]["retweet_count"]
favoritecount = string[x]["favorite_count"]
favorited = string[x]["favorited"]
retweeted = string[x]["retweeted"]
if "possibly_sensitive" in string[x]:
possiblysensitive = string[x]["possibly_sensitive"]
else:
possiblysensitive = ""
language = string[x]["lang"]
#print(possiblysensitive)
print(Functions.UnicodeFilter(tweettext))
#print(inreplytouserid)
#print("INSERT INTO tweet(ExTweetID, TweetText, Truncated, InReplyToStatusID, InReplyToUserID, InReplyToScreenName, IsQuoteStatus, RetweetCount, FavoriteCount, Favorited, Retweeted, Language, TweetDate, TweetSource, PossiblySensitive) VALUES (" + str(tweetid) + ", '" + Functions.UnicodeFilter(tweettext) + "', " + str(truncated) + ", " + Functions.CheckNull(inreplytostatusid) + ", " + Functions.CheckNull(inreplytouserid) + ", '" + Functions.CheckNull(inreplytoscreenname) + "', " + str(isquotestatus) + ", " + str(retweetcount) + ", " + str(favoritecount) + ", " + str(favorited) + ", " + str(retweeted) + ", '" + str(language) + "', '" + Functions.ToSQL(tweetcreated) + "', '" + Functions.ToSQL(tweetsource) + "', " + str(possiblysensitive) + ")")
#MySQLCL.Set("INSERT INTO tweet(ExTweetID, TweetText, Truncated, InReplyToStatusID, InReplyToUserID, InReplyToScreenName, IsQuoteStatus, RetweetCount, FavoriteCount, Favorited, Retweeted, Language, TweetDate, TweetSource, PossiblySensitive) VALUES (" + str(tweetid) + ", '" + tweettext + "', " + str(truncated) + ", " + Functions.CheckNullNum(inreplytostatusid) + ", " + Functions.CheckNullNum(inreplytouserid) + ", '" + Functions.CheckNull(inreplytoscreenname) + "', " + str(isquotestatus) + ", " + str(retweetcount) + ", " + str(favoritecount) + ", " + str(favorited) + ", " + str(retweeted) + ", '" + language + "', '" + str(Functions.FormatDate(tweetcreated)) + "', '" + str(Functions.UnicodeFilter(tweetsource)) + "', " + str(possiblysensitive) + ")")
#staticmethod
def ToBool(variable):
if variable.lower() == 'true':
return True
elif variable.lower() == 'false':
return False
#staticmethod
def CheckNullNum(var):
if var == None:
return "0"
else:
return str(var)
#staticmethod
def CheckNull(var):
if var == None:
return ""
else:
return var
#staticmethod
def ToSQL(var):
temp = var
temp = temp.replace("'", "")
return str(temp)
#staticmethod
def UnicodeFilter(var):
temp = var
temp = temp.replace(chr(0x2019), "")
temp = temp.replace(chr(0x003c), "(lessthan)")
temp = temp.replace(chr(0x003e), "(greaterthan)")
temp = temp.replace(chr(0xd83c), "")
temp = temp.replace(chr(0xddfa), "")
temp = temp.replace(chr(0xddf8), "")
temp = temp.replace(chr(0xd83d), "")
temp = temp.replace(chr(0xdc4d), "")
temp = Functions.ToSQL(temp)
return temp
#staticmethod
def FormatDate(var):
temp = var
dt = datetime.strptime(temp, "%a %b %d %H:%M:%S %z %Y")
retdt = str(dt.year) + "-" + str(dt.month) + "-" + str(dt.day) + "T" + str(dt.hour) + ":" + str(dt.minute) + ":" + str(dt.second)
return retdt
As you can see, I've been using the function UnicodeFilter in order to try to filter out the unicode characters in hex. The function works when dealing with single unicode characters, but when encountering multiple unicode characters placed together, this method fails and gives the following error:
'charmap' codec can't encode characters in position 107-111: character maps to 'undefined'
Do any of you have any ideas about how to get past this problem?
UPDATE: I have tried Andrew Godbehere's solution and I was still running into the same issues. However, I decided to see if there were any specific characters that were causing a problem, so I decided to print the characters to the console character by character. That gave me the error as follows:
'charmap' codec can't encode character '\U0001f1fa' in position 0: character maps to 'undefined'
Upon seeing this, I added this to the UnicodeFilter function and continued testing. I have run into multiple errors of the same kind while printing the tweets character by character. However, I don't want to have to keep making these exceptions. For example, see the revised UnicodeFilter function:
#staticmethod
def UnicodeFilter(var):
temp = var
temp = temp.encode(errors='ignore').decode('utf-8')
temp = temp.replace(chr(0x2019), "")
temp = temp.replace(chr(0x003c), "(lessthan)")
temp = temp.replace(chr(0x003e), "(greaterthan)")
temp = temp.replace(chr(0xd83c), "")
temp = temp.replace(chr(0xddfa), "")
temp = temp.replace(chr(0xddf8), "")
temp = temp.replace(chr(0xd83d), "")
temp = temp.replace(chr(0xdc4d), "")
temp = temp.replace(chr(0x2026), "")
temp = temp.replace(u"\U0001F1FA", "")
temp = temp.replace(u"\U0001F1F8", "")
temp = temp.replace(u"\U0001F44D", "")
temp = temp.replace(u"\U00014F18", "")
temp = temp.replace(u"\U0001F418", "")
temp = temp.replace(u"\U0001F918", "")
temp = temp.replace(u"\U0001F3FD", "")
temp = temp.replace(u"\U0001F195", "")
temp = Functions.ToSQL(temp)
return str(temp)
I don't want to have to add a new line for every character that causes a problem. Through this method, I have been able to pass multiple tweets, but this issue resurfaces with every tweet that contains different symbols. Is there not a solution that will filter out all these characters? Is it possible to filter out all characters not in the utf-8 character set?
Try the built-in unicode encode/decode error handling functionality: str.encode(errors='ignore')
For example:
problem_string = """\
RT #John_Hunt07: Just voted for #marcorubio is Florida! I am ready for a New American Century!! #FLPrimary \ud83c\uddfa\ud83c\uddf8\ud83c\uddfa\ud83c\uddf8\ud83d\udc4d
"""
print(problem_string.encode(errors='ignore').decode('utf-8'))
Ignoring errors removes problematic characters.
> RT #John_Hunt07: Just voted for #marcorubio is Florida! I am ready for a New American Century!! #FLPrimary
Other error handling options may be of interest.
xmlcharrefreplace for instance would yield:
> RT #John_Hunt07: Just voted for #marcorubio is Florida! I am ready for a New American Century!! #FLPrimary 🇺🇸🇺🇸👍
If you require custom filtering as implied by your UnicodeFilter function, see Python documentation on registering an error handler.
Python provides a useful stacktrace so you can tell where errors are coming from.
Using it, you will have found that your print is causing the exception.
print() is failing because you're running Python from the Windows console, which, by default only, supports your local 8bit charmap. You can add support with: https://github.com/Drekin/win-unicode-console
You can also just write your data straight to a text file. Open the file with:
open('output.txt', 'w', encoding='utf-8')
Found the answer. The issue was that there was a range of characters in the tweets that were causing problems. Once I found the correct Unicode range for the characters, I implemented the for loop to replace any occurrence of any Unicode character within that range. After implementing that, I was able to pull thousands of tweets without any formatting or MySQL errors at all.
#staticmethod
def UnicodeFilter(var):
temp = var
temp = temp.replace(chr(0x2019), "'")
temp = temp.replace(chr(0x2026), "")
for x in range(127381, 129305):
temp = temp.replace(chr(x), "")
temp = MySQLCL.ToSQL(temp)
return str(temp)
rs = s.executeQuery("SELECT Class1_predicted, Class2_predicted, Class3_predicted, Class_predicted"
+ SUM(PROFIT_LOSS) AS "Total Profit",
+ "FROM xxxxxx "
+ "WHERE CLASS1_PREDICTED = curr_class1_predicted, CLASS2_PREDICTED = curr_class2_predicted, CLASS3_PREDICTED = curr_class3_predicted, CLASS_PREDICTED = curr_class_predicted,"
+ "PROFIT_LOSS >= 0,"
+ "GROUP BY Class1_predicted, Class2_predicted, Class3_predicted,Class_predicted");
rs.next();
int recordCount = rs.getInt(1);
myConsole.getOut().println("Number of records in subset of table xxxxx where P/L >= 0: " + recordCount);
I am getting an error on the AS in the second line ?
Not sure how to correct ?
Bob M
You should put the whole query in a String.
It seems like here you are not actually quoting the expression:
+ SUM(PROFIT_LOSS) AS "Total Profit",
It should be something like this:
+ "SUM(PROFIT_LOSS) AS Total_Profit,"
This is my code
for (int m=0; m < i ; m++){
ta1.setText( s[m].getName().toString() + ", " + s[m].getProgramName().toString() + ", " + s[m].getUni1() + ", " + s[m].getUni2() + ", " + s[m].getUni3() + ", " );
}
It's supposed to print a line from an array of student ( called s) into a JTextArea ( called ta1 ). the problem is that it always only prints the last student in the array.
I need to print each student in a new line. could anyone help me sort it out?
When you set text on an element, the current position in the loop will take over the last one.
Try doing this.
String s = "";
for(int m = 0, m <i; m++){
s += s[m].getName.toString() + ", " + s[m].getprogramName().toString() + "\n;
}
ta1.setText(s);
Create a string and add each entry to it then add new line to end of each entry "\n"
Then do.
ta1.setText(s);
setText overwrites whatever is the current text.
You need append instead; you also need a "\n" at the end of a line.
I have a group of people who have different expenses during a period. Everybody has a balance after this period. It looks like this in excel:
Person A: 6
Person B: 10
Person C: -7,5
Person D: -8,5
After this period a settlement will take place. I currently do this by manually. This results in:
Person C pays 6 to person A.
Person C pays 1,5 to person B.
Person D pays 8,5 to person B.
Person A gets 6 from person C.
Person B gets 1,5 form person C.
Peron B gets 8,5 from person D.
(There are multiple solutions possible when more persons are involved.)
The problem is that I have to apply this procedure for a big group of people. So my question is: 'How to apply this 'who owes who'-procedure by using an excel spreadsheet algorithm or macro?'.
I made a excel version too but its in Open office. can you download that? The following macro might work on its own. If it does not should be something small. it works fine in OOO and is saved as a Excel 97/2000 workbook document.
'this might not be needed in Microsoft Excel, comment it out
Option VBASupport 1 'OWES
Option Explicit
'Cells(row, col),
Private Sub cmd1_Click()
'data is same sheet, from row 4, column 4
'row 4 has names in columns, so 4,4 has name 1, 4,5 has name 2
'row 5 has amounts spent like 6, -10
'output is in columns 3 and 5
dim i
dim j,s as String, sum1
s=""
'get number of cells used in row 4 and check if corresponding row 6 column has a number value too
i = 4
sum1=0
do while(cells(4,i).Value <> "" and i < 500)
j = CDbl(cells(5,i).Value)
sum1 = sum1 + j
if j <> cells(5,i).Value then
MsgBox "Col " & i & " not a number?"
End
end if
i=i+1
loop
if i > 499 then
Msgbox "too many cols"
End
end if
If sum1 > 0.3 or sum1 < -0.3 then
Msgbox "Sum is not near 0 :" & sum1
End
End if
Dim colCnt as Integer
colCnt = i - 4
cells (7,1).Value = "Col count = " & colCnt
Dim spent(colCnt) as Double
Dim owes1(colCnt ) as String
Dim owes2(colCnt ) as String
for i= 4 to colCnt + 3
spent(i - 3) = CDbl(cells(5,i).Value)
Next
Dim cnt,lastNeg, abs1,maxPay ' safety var for never ending loops, only if data bad like many cols and more than .1 diffs
lastNeg = 4
dim lastPay1
lastPay1 = 10
dim ii,jj,c1,c2,toPay
toPay = 0
On Local Error Goto errh
for i= 4 to colCnt + 3
cnt = 0
ii = i - 3
c1 = spent(ii)
'Cells(6,i) = "ok "
if spent(ii) > 0.1 and cnt < colCnt Then '//has to take
cnt = cnt + 1
for j = lastNeg to colCnt + 3 ' ; j < people.length && spent(ii) > 0.1; j++)
jj = j - 3
's = s & Me.Cells(ii,j) & " "
if spent(ii) > 0.1 then
if spent(jj) < -0.1 Then ' //has to give and has balance to give
c1 = spent(ii)
c2 = spent(jj)
lastNeg = j
abs1 = spent(jj) * -1'//can use absolute fn
maxPay = abs1
if(maxPay > spent(ii)) Then
toPay = spent(ii)'
else
toPay = abs1
End if
spent(ii) = spent(ii) - toPay
spent(jj) = spent(jj) + toPay
Cells(lastPay1, 3).Value = Cells(4 , j) & " pays " & toPay & " to " & Cells(4 , i )
Cells(lastPay1, 5).Value = Cells(4 , i) & " gets " & toPay & " from " & Cells(4 , j)
lastPay1 = lastPay1 + 1
End if
End if
Next
End if
Next
Msgbox "Done"
err.Clear
if err.Number <> 0 Then
errH:
dim yy
yy = msgBox("err " & err.Number & " " & err.Description & " Continue", 2)
if yy = vbYes Then
Resume Next
End IF
End IF
End Sub
Book at http://sel2in.com/prjs/vba/profile (owes)
Can see http://www.excel-vba.com/ , http://office.microsoft.com/en-in/training/get-in-the-loop-with-excel-macros-RZ001150634.aspx the help in excel was useful too (f1 inside macro editor, can select a keyword or type and get context sensitive help by pressing f1)
How important is the pairing of who owes what to who? The reason I ask - it's simple to figure out the total cost per person and then determine who owes money and who needs a refund. If one person can be the "banker", he can collect all the money due and disburse all the refunds.
Much simpler question, if you have somebody willing to be the banker.
Trying to pair everything up will quite possibly not result in an exact answer, or may require one or more people making payments to more than one person - as well as one or more people trying to collect from more than one other person.
See http://sel2in.com/pages/prog/html/owes.html
Javascript fn
<form>
Paste tab seperated list of people on first line, Second line has blanace - positive means they spent more than others, negative means other spent on them (they owe)
<br>
<textarea id=t1 rows=3 cols=70></textarea>
</form>
<button onclick=calcOwes() >Calc owes</button>
<br>
<b>Result:</b>
<div id=result>Will appear here if data is good</div>
<br>
<b>Parsed data for debug:</b>
<div id=data1>Will appear here if data is good</div>
<br>
<hr>
<script>
function calcOwes(){
/**
2013 Tushar Kapila
If Person A: 6
Person B: 10
Person C: -7,5
Person D: -8,5
Then Person C pays 6 to person A.
Person C pays 1,5 to person B.
Person D pays 8,5 to person B.
*/
s = document.getElementById("t1").value
var line = s.split("\n")
//v = confirm("Your Data looks okay?:\n" + s)
//if(!v){ return;}
if(s.length < 2 || s.indexOf("\n") < 0){
alert("No line sep ")
return
}
people = line[0].split("\t")
spent = line[1].split("\t")
spent2 = line[1].split("\t")
if(spent.length < 2){
alert("Bad data, no spent data " + spent.length + "; 0 " + spent[0] + "; 1 " + + spent[1])
return
}
if(people.length != spent.length){
alert("People and amounts do not tally. make sure no tabs inside names, spaces are okay")
return
}
sum = 0;
data1o = document.getElementById("data1")
data1o.innerHTML = "";
for(i = 0;i < people.length; i++){
spent[i] = spent[i].trim()
spent[i] = parseFloat(spent[i])
sum += spent[i]
s = (1 + i) + " \"" + people[i] + "\" :" + spent[i] + ";<br>"
data1o.innerHTML += s;
}
if(sum > 0.2 || sum < -0.2){
v = confirm("Sum (" + sum + ")is not zero continue?")
if(!v){return;}
}
lastNeg = 0;
payDetails = new Array();
getDetails = new Array();
lastPay = 0;
for(i = 0;i < people.length; i++){
cnt = 0;
if(spent[i] > 0.1 && cnt < people.length){//has to take
cnt++
for(j = lastNeg; j < people.length && spent[i] > 0.1; j++){
if(spent[j] < -0.1){//has to give and has balance to give
lastNeg = j;
abs1 = spent[j] * -1;//can use absolute fn
maxPay = abs1
if(maxPay > spent[i]){
toPay = spent[i];
}else{
toPay = abs1
}
spent[i] -= toPay
spent[j] += toPay
payDetails[lastPay] = people[j] + " pays " + toPay + " to " + people[i]
getDetails[lastPay] = people[i] + " gets " + toPay + " from " + people[j]
lastPay++;
}
}
}
}
s = ""
s2 = ""
for(i = 0;i < lastPay; i++){
s = s + payDetails[i] + "<br>"
s2 = s2 + getDetails[i] + "<br>"
}
document.getElementById("result").innerHTML = s + "<br>" + s2
}
</script>
<br>Sample input 1 (tabs there?)
<br><pre>
a b c d
6 10 -7.5 -8.5
</pre>
<br>Sample input 2
<pre>
Anna Dan Bobby Scareface Colly Doc Egg face
-6 10 -7.3 -8.33 11.67
</pre>