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diff --git a/prelims/handler.py b/prelims/handler.py
index d4d416d..014bc7d 100644
--- a/prelims/handler.py
+++ b/prelims/handler.py
@@ -1,16 +1,18 @@
 from .post import Post

 import os
-
+from pathlib import Path

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import requests


class GitHubClient:
    def __init__(self, apikey, session=None):
        self.headers = {"Authorization": f"Bearer {apikey}"}
        if not session:
            self.sess = requests.Session()
        else:
            self.sess = session

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import matplotlib as mlp
import pandas as pd
mlp.use("agg")

from matplotlib import pyplot as plt
from matplotlib.dates import (
    MonthLocator,
    num2date,
    AutoDateLocator,
    AutoDateFormatter,

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#!/usr/bin/env ruby

# Forked from: http://hamasyou.com/blog/2014/02/13/movable-type-to-octopress/

require 'date'
require 'mustache'
require 'stringex'
require 'cgi'
require 'reverse_markdown'

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devtools::install_github("crowding/msgpack-r")

library(msgpack)

x <- data.frame(a=1:3, b=4:6)

conn <- gzfile("test.msgpack.gz", open="w+b")
apply(x, 1, function(x) {writeMsg(c(x, time=as.integer(Sys.time())), conn)})
flush(conn)
close(conn)

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+t1_1:
  py>: rand.rand_params
  docker:
    image: 'digdag/digdag-python:3.6.8-stretch'
  n_iter: 5

+t1_2:
  echo>: ${param_list}

+t1_3:

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with agg as (
  select
    p.label, p.probability, t.survived
  from
    prediction_rf p
  join
    test t on (p.rowid = t.rowid)
  order by
    probability desc
),