I am trying to change the name of a variable within a loop using select(). This is the code:
sibling_list2 = paste0("Sibling_", unlist(sibling2))
for(s in 2:length(sibling_list2)) {
dbAppendTable(conPrueba, paste0("EW_x", y),
dat %>%
inner_join(child2 %>% filter(relcode == 1) %>%
select(rel_f_person_id = person_id, person_id = sibling_list[s], (sibling_list[s] = Sibling_1), sibling_list),
by = c("person_id", "rel_f_person_id")))
}
However I get the error "Error in select():
! object 'Sibling_1' not found
Run rlang::last_error() to see where the error occurred." even though the object Sibling_1 exists.
The problem seems to be in "(sibling_list[s] = Sibling_1)". If i delete the parentheses I get another error saying "Error: unexpected '=' in:...". I also tried using the functions mutate() and rename(), but they have the same error.
Related
I am unable to parse a JSON array from a text file due to errors and my limited knowledge of JSON.
The file looks something like this [{"random":"fdjsf","random56":128,"name":"dsfjsd", "rid":1243,"rand":674,"name":"dsfjsd","random43":722, "rid":126},{"random":"fdfgfgjsf","random506":120,"name":"dsfjcvcsd", "rid":12403,"rando":670,"name":"dsfooojsd","random4003":720, "rid":120}] It has more than one object({}) in the entire array however I did not want to include all 600. The layout shown above is basically how all of them look.
r = s.get(getAPI, headers=header, verify=False)
f = open('text.txt', 'w+')
f.write(r.text)
f.close
output_file = open ('text.txt', 'r')
json_array = json.load(output_file)
json_list = []
for item in json_array:
name = "name"
rid = "rid"
json_items = {name:None, rid:None}
json_items = [name] = item[name]
json_items = [rid] = item[rid]
json_list.append(json_items)
print(json_list)
I would like to loop through an array and find any time it says "name":... eventually followed by "rid":... and store those in a dictionary as key value pairs.
Errors:
ValueError: too many values to unpack (expected 1)
There is a syntax error when you assign values to json_items, change it to:
json_items[name] = item[name]
json_items[rid] = item[rid]
I want to create a for loop when the variable is in a string format.
my code is:
for i in range(1,32):
DEP_RATE = pd.read_sql_query('select DAYNUM,YYYYMM,sum(DEP_RATE) from ASPM.aspm_qtr where LOCID="ABQ" and DAYNUM = i:"{i}" group by YYYYMM',{i:str(i)},rconn)
the error is:
'dict' object has no attribute 'cursor'
I used this code:
for i in range(1,32):
DEP_RATE = pd.read_sql_query('select DAYNUM,YYYYMM,sum(DEP_RATE) from ASPM.aspm_qtr where LOCID="ABQ" and DAYNUM = "i" group by YYYYMM',rconn, params={i:str(i)})
It hasn't error but doesn't work. the problem is:
("Truncated incorrect DOUBLE value: 'i'")
This appears to be a PANDAS question, yes? I believe it's an argument mismatch with the read_sql_query API. The function signature is:
pandas.read_sql_query(sql, con, index_col=None, coerce_float=True, params=None, parse_dates=None, chunksize=None)
Which roughly says that the first two positional arguments are required, and everything else is defaulted or optional.
To make it more obvious, consider putting your core SQL string on a separate line:
sql = 'SELECT daynum, ... AND daynum = :i'
for i in range(1, 32):
DEP_RATE = pd.read_sql_query(sql, {i: str(i)}, rconn)
With this formulation, it's more obvious that your arguments do not match the API: your second argument is off. Perhaps you want (note the additional keyword argument params):
DEP_RATE = pd.read_sql_query(sql, rconn, params={i: str(i)})
I corrected the code. The correct answer is:
DEP_RATE = list(np.zeros((1,1)))*31
for i in range(1,32):
DEP_RATE[i-1] =np.array(pd.read_sql_query('select DAYNUM,YYYYMM,sum(DEP_RATE) from ASPM.aspm_qtr where LOCID="ABQ" and DAYNUM = '+str(i)+' group by YYYYMM;',rconn, params={i:str(i)}))
I am trying to make a loop for my dataset 'data1' to check and make a sum of the variable 'hours2015' in case the type of caregiver is the same (string variable= doctor, nurse, physical therapist, etc. So for each type of caregiver I would like to make the sum of total hours worked in 2015. I keep getting a syntax error messages. I can't seem to get the code right. Can anyone help me please? Thanks!
for(i in 1:133) {
totalhours2015[i] <- data1$hours2015[i] + data1$hours2015[i+1]
if {("data1$typecaregiver" [i] == "data1$typecaregiver" [i+1]) }
}
Error: unexpected 'if' in:
"for(i in 1:133){ .
totalhours2015[i] <- newrusthuizendata$uren2015[i] + newrusthuizendata$uren2015[i+1] if"
}
Error: unexpected '}' in "}"
This question already has answers here:
Issue querying from Access database: "could not convert string to float: E+6"
(3 answers)
Closed 7 years ago.
I am trying to access some of the columns in a Microsoft Access database table which contains numbers of type double but I am getting the error mentioned in the title.The code used for querying the database is as below, the error is occurring in the line where cur.execute(....) command is executed. Basically I am trying filter out data captured in a particular time interval. If I exclude the columns CM3_Up, CG3_Up, CM3_Down, CG3_Down which contains double data type in the cur.execute(....) command I wont get the error. Same logic was used to access double data type from other tables and it worked fine, I am not sure what is going wrong.
Code:
start =datetime.datetime(2015,03,28,00,00)
a=start
b=start+datetime.timedelta(0,240)
r=7
while a < (start+datetime.timedelta(1)):
params = (a,b)
sql = "SELECT Date_Time, CM3_Up, CG3_Up, CM3_Down, CG3_Down FROM
Lysimeter_Facility_Data_5 WHERE Date_Time >= ? AND Date_Time <= ?"
for row in cur.execute(sql,params):
if row is None:
continue
r = r+1
ws.cell(row = r,column=12).value = row.get('CM3_Up')
ws.cell(row = r,column=13).value = row.get('CG3_Up')
ws.cell(row = r,column=14).value = row.get('CM3_Down')
ws.cell(row = r,column=15).value = row.get('CG3_Down')
a = a+five_min
b = b+five_min
wb.save('..\SE_SW_Lysimeters_Weather_Mass_Experiment-02_03_26_2015.xlsx')
Complete error report:
Traceback (most recent call last):
File "C:\DB_PY\access_mdb\db_to_xl.py", line 318, in <module>
for row in cur.execute(sql,params):
File "build\bdist.win32\egg\pypyodbc.py", line 1920, in next
row = self.fetchone()
File "build\bdist.win32\egg\pypyodbc.py", line 1871, in fetchone
value_list.append(buf_cvt_func(alloc_buffer.value))
ValueError: could not convert string to float: E-3
As to this discussion:
Python: trouble reading number format
the trouble could be that e should be d, like:
float(row.get('CM3_Up').replace('E', 'D'))
Sounds weird to me though, but I know only little of Python.
It sounds like you receive strings like '2.34E-3', so try with a conversion. Don't know Python, but in C# it could be like:
ws.cell(row = r,column=12).value = Convert.ToDouble(row.get('CM3_Up'))
ws.cell(row = r,column=13).value = Convert.ToDouble(row.get('CG3_Up'))
ws.cell(row = r,column=14).value = Convert.ToDouble(row.get('CM3_Down'))
ws.cell(row = r,column=15).value = Convert.ToDouble(row.get('CG3_Down'))
i have many data.frames() that i am trying to send to MySQL database via RMySQL().
# Sends data frame to database without a problem
dbWriteTable(con3, name="SPY", value=SPY , append=T)
# stock1 contains a character vector of stock names...
stock1 <- c("SPY.A")
But when I try to loop it:
i= 1
while(i <= length(stock1)){
# converts "SPY.A" into SPY
name <- print(paste0(str_sub(stock1, start = 1, end = -3))[i], quote=F)
# sends data.frame to database
dbWriteTable(con3,paste0(str_sub(stock1, start = 1, end = -3))[i], value=name, append=T)
i <- 1+i
}
The following warning is returned & nothing was sent to database
In addition: Warning message:
In file(fn, open = "r") :
cannot open file './SPY': No such file or directory
However, I believe that the problem is with pasting value onto dbWriteTable() since writing dbWriteTable(con3, "SPY", SPY, append=T) works but dbWriteTable(con3, "SPY", name, append=T) will not...
You are probably using a non-base package for str_sub and I'm guessing you get the same behavior with substr. Does this succeed?
dbWriteTable(con3, substr( stock1, 1,3) , get(stock1), append=T)