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task09/completed class #53

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c839b4c
completed class
KuanWang-Astro Nov 27, 2018
d051ec8
added to_sql
KuanWang-Astro Nov 27, 2018
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19 changes: 13 additions & 6 deletions task-09/get_top_names.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,9 @@
For astrophg/learning-by-doing: Task 9
https://github.com/astropgh/learning-by-doing/tree/master/task-09
"""

import numpy as np
import pandas as pd
from sqlalchemy import create_engine

def extract_data_lines(filename, start_text, end_text, include_start=False,
include_end=False):
Expand Down Expand Up @@ -35,14 +36,16 @@ def __init__(self):
def add(self, name, is_female, rank):
if self.year is None:
raise ValueError('One must set year first')

# complete this member function
raise NotImplementedError
else:
self.records.append((self.year, 'female' if is_female else 'male', rank, name))

def to_pandas(self):
# complete this member function
raise NotImplementedError
return pd.DataFrame.from_records(self.records, columns=['year', 'gender', 'rank', 'name'])

def to_sql(self,filename):
pd.DataFrame.from_records(self.records, columns=['year', 'gender', 'rank', 'name']).to_sql(filename,engine)

def clear(self):
self.records.clear()
self.year = None
Expand All @@ -67,3 +70,7 @@ def clear(self):
data = recorder.to_pandas()

print(data.query('name == "Emma"').query('rank == 1')['year'].tolist())

engine = create_engine('sqlite://', echo=False)
recorder.to_sql('testsql')
print(engine.execute("SELECT * FROM testsql").fetchall())