python-kurs-softed/loesungen/dateien.py

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# Aufgabe 1
fp = open("../uebungen/employee_skills.txt", encoding="utf-8")
contents = fp.read()
fp.close()
print("Länge:", len(contents))
print("-" * 50)
# Alternativ:
with open("../uebungen/employee_skills.txt") as fp:
contents = fp.read()
print(contents)
print("-" * 50)
# Aufgabe 2
with open("../uebungen/employee_skills.txt") as fp:
i = 0
for line in fp:
line = line.strip()
if not line:
continue
i += 1
print("Nicht leere Zeilen:", i)
print("-" * 50)
# Aufgabe 3
employees = []
with open("../uebungen/employee_skills.txt") as fp:
for line in fp:
if not line.strip():
continue
name = line.split(":")[0].strip()
employees.append(name)
employees.sort()
for name in employees:
print(name)
print("-" * 50)
# Aufgabe 4
employee_salaries = {}
with open("../uebungen/salaries.txt") as fp:
for line in fp:
if not line.strip():
continue
name, salary = line.strip().split(":", 1)
name = name.strip()
salary = int(salary.strip())
employee_salaries[name] = salary
print("Min. Gehalt:", min(employee_salaries.values()))
print("Max. Gehalt:", max(employee_salaries.values()))
print("-" * 50)
# Aufgabe 5
employee_skills = {}
with open("../uebungen/employee_skills.txt") as fp:
for line in fp:
if not line.strip():
continue
name, skills = line.strip().split(":", 1)
name = name.strip()
skills = [item.strip() for item in skills.split(",")]
employee_skills[name] = skills
# Aufgabe 6
employees = {}
for key in employee_salaries:
salary = employee_salaries.get(key, 0)
skills = employee_skills.get(key)
employees[key] = {"skills": skills, "salary": salary}
print("-" * 50)
# Aufgabe 6
employee_salaries = {}
try:
with open("../uebungen/salaries-errors.txt") as fp:
for i, line in enumerate(fp):
# remove whitspace at satrt / end of line
line = line.strip()
# ignore empty / whitespace-only lines
# and comment lines
if not line or line.startswith("#"):
continue
try:
name, salary = line.strip().split(":", 1)
except ValueError as exc:
print(f"Warning: could not parse line {i+1}: {exc}")
else:
name = name.strip()
try:
salary = salary.strip()
salary = salary.strip("$€")
salary = int(salary)
except (ValueError, TypeError) as exc:
print(f"Warning: could not parse data on line {i+1}: {exc}")
else:
employee_salaries[name] = salary
except FileNotFoundError as exc:
print(f"Could not open file: {exc}")
print("Min. Gehalt:", min(employee_salaries.values()))
print("Max. Gehalt:", max(employee_salaries.values()))
print("-" * 50)