From 16ab66c6a8ddc0f434187e468158e4634693739f Mon Sep 17 00:00:00 2001
From: Christopher Arndt <chris@chrisarndt.de>
Date: Mon, 6 May 2024 07:44:35 +0200
Subject: [PATCH] Add examples for reading files

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>
---
 beispiele/readfile1.py | 12 ++++++++++++
 beispiele/readfile2.py | 14 ++++++++++++++
 beispiele/readfile3.py | 16 ++++++++++++++++
 beispiele/readfile4.py | 24 ++++++++++++++++++++++++
 4 files changed, 66 insertions(+)
 create mode 100644 beispiele/readfile1.py
 create mode 100644 beispiele/readfile2.py
 create mode 100644 beispiele/readfile3.py
 create mode 100644 beispiele/readfile4.py

diff --git a/beispiele/readfile1.py b/beispiele/readfile1.py
new file mode 100644
index 0000000..1c3a716
--- /dev/null
+++ b/beispiele/readfile1.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+import sys
+
+filename = sys.argv[1]
+
+with open(filename, "rb") as fileobj:
+    data = fileobj.read()
+
+num_bytes = len(data)
+
+print(f"The file contents are {num_bytes} long.")
diff --git a/beispiele/readfile2.py b/beispiele/readfile2.py
new file mode 100644
index 0000000..4995666
--- /dev/null
+++ b/beispiele/readfile2.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+import sys
+
+filename = sys.argv[1]
+
+with open(filename, "r") as fileobj:
+    data = fileobj.read()
+
+    max_linelength = 0
+    for line in data.splitlines():
+        max_linelength = max(max_linelength, len(line))
+
+print(f"The longest line has a length of {max_linelength}.")
diff --git a/beispiele/readfile3.py b/beispiele/readfile3.py
new file mode 100644
index 0000000..12d0b20
--- /dev/null
+++ b/beispiele/readfile3.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+import sys
+
+filename = sys.argv[1]
+
+with open(filename, "r") as fileobj:
+    max_linelength = 0
+    longest_line = -1
+
+    for i, line in enumerate(data):
+        if len(line) > max_linelength:
+            max_linelength = len(line)
+            longest_line = i + 1
+
+print(f"The longest line is line {longest_line} with a length of {max_linelength}.")
diff --git a/beispiele/readfile4.py b/beispiele/readfile4.py
new file mode 100644
index 0000000..c942e33
--- /dev/null
+++ b/beispiele/readfile4.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+
+import sys
+
+filename = sys.argv[1]
+
+data = {}
+
+with open(filename, "r") as fileobj:
+    for i, line in enumerate(data):
+        line = line.strip()  # remove whitespace from start/end of line
+
+        if line.startswith('#'):
+            # ignore comment lines
+            continue
+
+        name, raw_data = line.split(":", 1)  # split line at first colon
+        items = raw_data.split(",")          # split raw data at commas
+
+        data[name.strip()] = items
+
+
+for key in data:
+    print(key, data[key])