added

Dienstag/User_modify.py

@@ -0,0 +1,63 @@
+#! /usr/bin/env python3
+def read_file(path: str) -> "List of lines":
+    #f = open(path, 'r')
+    with open(path, 'r') as f: 
+    # f.read(buflen) - binary read
+    # f.readline() - 1 Textzeile lesen -> str
+    # f.readlines - alle Textzeilen lesen ->str
+    # f ist gleichzeitig Iterator
+    # 1 möglichkeit
+    #lines = list(map(lambda s : s.rstrip(), f))
+    # 2 möflichkeit
+        lines = list(map(str.rstrip, f))
+    # 3 möglichkeit
+    #lines = []
+    #for line in f.readlines():
+    #    lines.append(line.rstrip())
+    #f.close()
+    return lines
+
+def parse_passwd_lines(line: str) -> "Dict of passwd details":
+    parts = line.split(':')
+    userdict = {
+        "username" : parts[0],
+        "uid" : parts[2],
+        "gid" : parts[3],
+        "gecos" : parts[4],
+        "home" : parts[5],
+        "shell": parts[6]
+    }
+    return userdict
+
+def build_userlist(lines) -> "List of user dicts":
+    result = []
+    for line in lines:
+        result.append(parse_passwd_lines(line))
+    return result
+
+def print_userlist_sorted_by_username(userlist):
+    #ruft für jedes Element key(elem) also e im Lambda-Ausdruck ist ein Element der Liste user dict
+    for user in sorted(userlist, key=lambda e: e['username'].lower()):
+        print(
+            user['username'], 
+            user['uid'], 
+            user['gecos'], 
+            user['home'], 
+            user['shell']
+            )
+
+def print_userlist_sorted_by_uid(userlist):
+    pass
+
+def main():
+    output_functions = {
+        'username': print_userlist_sorted_by_username,
+        'uid': print_userlist_sorted_by_uid,
+    }
+    outfunc = output_functions['username']
+    lines = read_file("/etc/passwd")
+    userlist = build_userlist(lines)
+    outfunc(userlist)
+
+
+main()

Readme.md

@@ -12,3 +12,11 @@ Wir können die integrierte Python-Funktion map() verwenden, um für jedes Eleme
 
 numbers = [10, 15, 21, 33, 42, 55]
 mapped_numbers = list(map(lambda x: x * 2 + 3, numbers))
+
+rstrip schneidet \n ab
+
+schneidet hinten was ab bei einem String
+
+
+
+mit helpdir