piyo7 · June 22, 2017 09:00
diff --git a/file0.txt b/file0.txt
 >>> s = pd.Series([0, 1, 2])
 >>> s[2]
 2
 >>> s[1] = np.nan
 >>> s[2]
 2.0
diff --git a/file1.txt b/file1.txt
 def do_something(df):
   foo = df[['bar', 'baz']]  # Is foo a view? A copy? Nobody knows!
   # ... many lines here ...
   foo['quux'] = value       # We don't know whether this will modify df or not!
   return foo
diff --git a/file2.txt b/file2.txt
 *** glibc detected *** /usr/local/anaconda/bin/python: free(): invalid pointer:
diff --git a/file3.txt b/file3.txt
 Fatal Python error: GC object already tracked
	def do_something(df):
	foo = df[['bar', 'baz']] # Is foo a view? A copy? Nobody knows!
	# ... many lines here ...
	foo['quux'] = value # We don't know whether this will modify df or not!
	return foo