From eace3436b2f3e5abf37bc11834160e06b34276a2 Mon Sep 17 00:00:00 2001
From: Michiel Cottaar <MichielCottaar@gmail.com>
Date: Sat, 10 Feb 2018 12:34:31 +0000
Subject: [PATCH] Added exercises
---
getting_started/02_text_io.ipynb | 24 +++++++++++++++++++++++-
getting_started/02_text_io.md | 14 +++++++++++++-
getting_started/02_text_io/input.txt | 20 ++++++++++++++++++++
3 files changed, 56 insertions(+), 2 deletions(-)
create mode 100644 getting_started/02_text_io/input.txt
diff --git a/getting_started/02_text_io.ipynb b/getting_started/02_text_io.ipynb
index c3b6aa2..b618173 100644
--- a/getting_started/02_text_io.ipynb
+++ b/getting_started/02_text_io.ipynb
@@ -599,7 +599,29 @@
"<a class=\"anchor\" id=\"exercises\"></a>\n",
"## Exercises\n",
"### Joining/splitting strings\n",
- "go from 2 column file to 2 rows\n",
+ "The file 02_text_io/input.txt contains integers in a 2-column format (separated by spaces). Read in this file and write it back out in 2-rows separated by comma's."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "input_filename = '02_text_io/input.txt'\n",
+ "out_filename = '02_text_io/output.txt'\n",
+ "\n",
+ "with open(input_filename, 'r') as input_file:\n",
+ " ...\n",
+ "\n",
+ "with open(output_filename, 'w') as output_file:\n",
+ " ..."
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
"### String formatting and regular expressions\n",
"Given a template for MRI files:\n",
"s<subject_id>/<modality>_<res>mm.nii.gz\n",
diff --git a/getting_started/02_text_io.md b/getting_started/02_text_io.md
index 9628a21..0c00651 100644
--- a/getting_started/02_text_io.md
+++ b/getting_started/02_text_io.md
@@ -275,7 +275,19 @@ A full discussion of regular expression goes far beyond this practical. If you a
<a class="anchor" id="exercises"></a>
## Exercises
### Joining/splitting strings
-go from 2 column file to 2 rows
+The file 02_text_io/input.txt contains integers in a 2-column format (separated by spaces). Read in this file and write it back out in 2-rows separated by comma's.
+
+```
+input_filename = '02_text_io/input.txt'
+out_filename = '02_text_io/output.txt'
+
+with open(input_filename, 'r') as input_file:
+ ...
+
+with open(output_filename, 'w') as output_file:
+ ...
+```
+
### String formatting and regular expressions
Given a template for MRI files:
s<subject_id>/<modality>_<res>mm.nii.gz
diff --git a/getting_started/02_text_io/input.txt b/getting_started/02_text_io/input.txt
new file mode 100644
index 0000000..f5fce0d
--- /dev/null
+++ b/getting_started/02_text_io/input.txt
@@ -0,0 +1,20 @@
+1 3
+14 3
+4 7
+12 5
+15 5
+14 4
+15 19
+7 17
+7 15
+16 3
+15 14
+17 9
+7 8
+4 5
+15 4
+11 5
+17 10
+3 19
+14 4
+18 3
--
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