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feat: exception checking

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phga 2021-10-20 18:11:14 +02:00
parent 761895fb6a
commit 86282b1ab7
1 changed files with 19 additions and 15 deletions
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34
melli/excel2sql.py
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@ -1,23 +1,20 @@
#!/bin/python3
import pandas as pd
import numpy as np
from argparse import ArgumentParser
# Wraps strings and timestamps into single quotes
def wrap_types(val):
if np.isnan(val):
print("NaN FOUND")
val = "NULL"
if type(val) in [str, pd._libs.tslibs.timestamps.Timestamp]:
if type(val) in [str, pd._libs.tslibs.timestamps.Timestamp] and val != "NULL":
return f"'{val}'"
else:
return val
p = ArgumentParser()
# action store_true is for flags
p.add_argument("-i", "--input", nargs="+", help="Path to input excel file")
p.add_argument("-o", "--output", nargs="+", help="Path to output sql file")
args = p.parse_args()
# Manual fallback if argument is not specified
if not args.input:
in_file_path = input("Please enter path to input excel file: ")
else:
@ -28,20 +25,26 @@ if not args.output:
else:
out_file_path = args.output[0]
# Simple input argument checks
if out_file_path.endswith(("xlsx", "xls")):
print("Aborting task. Possible overwrite of source file detected.")
print(f"Specified output file '{out_file_path}' ends with .xls/.xlsx")
exit(1)
if not in_file_path.endswith(("xlsx", "xls")):
print("Aborting task. No input file in excel format specified.")
exit(1)
print(f'Input: {in_file_path}\nOutput: {out_file_path}')
in_file = pd.ExcelFile(in_file_path)
print(in_file.parse("Datei", skiprows=1).head())
with open(out_file_path, "w") as of:
for sheet in in_file.sheet_names:
curr_meta = in_file.parse(sheet, nrows=1, header=None)
curr_sheet = in_file.parse(sheet, header=1)
curr_meta = curr_meta[0][0].split("#")
db = curr_meta[0]
table_prefix = curr_meta[1]
table_suffix = sheet
print(f'Processing sheet "{sheet}"...')
db_table = in_file.parse(sheet, nrows=1, header=None)[0][0]
curr_sheet = in_file.parse(sheet, header=1).fillna("NULL")
count = 0
# One line is one test subject/object
for line in curr_sheet.iterrows():
indices = line[1].index
@ -49,7 +52,6 @@ with open(out_file_path, "w") as of:
cols = ""
vals = ""
for i in range(len(indices)):
# print(type(values[i]), ": ", values[i])
if i != 0:
cols += f", {indices[i]}"
vals += f", {wrap_types(values[i])}"
@ -57,4 +59,6 @@ with open(out_file_path, "w") as of:
cols += f"{indices[i]}"
vals += f"{wrap_types(values[i])}"
# INSERT INTO $DB.$TABLE ($COL1, $COL2, ...) VALUES ($VAL1, $VAL2, ...)
of.write(f'INSERT INTO "{db}"."{table_prefix}.{table_suffix}" ({cols}) VALUES ({vals})\n')
of.write(f'INSERT INTO {db_table} ({cols}) VALUES ({vals})\n')
count += 1
print(f'Created {count} INSERT statements for sheet "{sheet}"\n')