Creating sqlite db in Python 3 with constructed f string and receiving: sqlite3.OperationalError: near "(": syntax error - sql

Question

I am trying to create a sqlite3 db table using a constructed f string in python 3, however I am receiving the below error:
sqlite3.OperationalError: near "(": syntax error
I had hoped that I wouldn't need to ask here for a syntax error but I have been searching on stackoverflow as well as generally online to identify the issue with no success.
I have compared the code to other samples and equally do not see any difference to the construction, except for that it doesn't appear to be common to use f strings.
I have read the pros/cons of passing parameters and would prefer this f string unless it is the root cause.
I expect the issue might be obvious, however any pointers would be greatly appreciated.
Below is the full code:
import sqlite3
import pandas as pd
db_path = [PATH TO DATABASE]
db_table_name = [TABLE NAME]
header_source = [PATH TO .XLSX]
def ReadHeaders():
df = pd.read_excel(header_source)
col_list = list(df.columns.values)
prep_col_list = [item.replace(" ", "_") for item in col_list]
col_string = " TEXT, _".join(prep_col_list)
final_col_string = col_string.replace("Primary_ID TEXT", "Primary_ID PRIMARY KEY")
return final_col_string
def CreateSQLdb():
cols = ReadHeaders()
conn = sqlite3.connect(db_path)
c = conn.cursor()
c.execute(f""" CREATE TABLE IF NOT EXISTS {db_table_name} ({cols}) """)
conn.commit()
conn.close()
A sample of the string that is created for the table headers is:
_link TEXT, _Primary_ID PRIMARY KEY, _Status_Description TEXT, _Price_List_Status TEXT, _Brand TEXT, _36_Character_Description TEXT

Answer 1

Solved
After breaking everything down, the root cause was the constructed string. I was able to identify it when trying to export the constructed string to a .txt file and received a unicode error.
Code before:
return final_col_string
Code after:
return final_col_string.encode(encoding="utf-8")
I also added a simple check of the table info for confirmation
def ShowTable(c):
c.execute(f"PRAGMA table_info({db_table_name})")
print (c.fetchall())
Complete code encase anyone else comes across this issue:
import sqlite3
import pandas as pd
db_path = [PATH TO DATABASE]
db_table_name = [TABLE NAME]
header_source = [PATH TO .XLSX]
def ReadHeaders():
df = pd.read_excel(header_source)
col_list = list(df.columns.values)
prep_col_list = [item.replace(" ", "_") for item in col_list]
col_string = " TEXT, _".join(prep_col_list)
final_col_string = col_string.replace("Primary_ID TEXT", "Primary_ID PRIMARY KEY")
return final_col_string.encode(encoding="utf-8")
def CreateSQLdb():
cols = ReadHeaders()
conn = sqlite3.connect(db_path)
c = conn.cursor()
c.execute(f""" CREATE TABLE IF NOT EXISTS {db_table_name} ({cols}) """)
conn.commit()
conn.close()
def ShowTable(c):
c.execute(f"PRAGMA table_info({db_table_name})")
print (c.fetchall())
if __name__ == "__main__":
CreateSQLdb()