Initial commit: Python learning project with examples and exercises

2025-07-20 17:08:50 +08:00
commit bc7bb56271
111 changed files with 11535 additions and 0 deletions
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+#student_scores
+def read_scores(filename):
+    student_scores = {}
+    try:
+        file = open(filename, 'r',encoding='utf-8')
+        next(file)  # 跳过第一行（标题行）
+        for line in file:
+            name, chinese, math, english = line.strip().split()
+            scores = [float(chinese), float(math), float(english)]
+            student_scores[name] = scores
+        return student_scores
+    except FileNotFoundError:
+        print(f"错误：文件'{filename}'不存在。")
+        return {}  # 返回空字典
+    except ValueError:
+        print("文件格式错误，每行应该包含姓名和三门课程的成绩。")
+        return {}  # 返回空字典
+    except Exception as e:
+        print(f"读取文件时发生错误：{e}")
+        return {}  # 返回空字典
+
+def calculate_averages(student_scores):
+    averages = {}
+    for name, scores in student_scores.items():
+        averages[name] = sum(scores) / len(scores)
+    return averages
+
+def write_averages_to_file(filename, averages):
+    try:
+        file=open(filename, 'w')
+        file.write("姓名 平均成绩\n")
+        for name, average in averages.items():
+            file.write(f"{name} {average:.2f}\n")
+    except Exception as e:
+        print(f"写入文件时发生错误：{e}")
+
+
+# 主程序
+scores_filename = 'student_scores.txt'
+averages_filename = 'student_averages.txt'
+
+# 读取成绩
+student_scores = read_scores(scores_filename)
+
+# 如果 student_scores 是空字典，则不进行后续操作
+if student_scores:
+    # 计算平均成绩
+    averages = calculate_averages(student_scores)
+
+    # 将平均成绩写入文件
+    write_averages_to_file(averages_filename, averages)
+else:
+    print("没有数据可用于计算平均成绩。")
+
+
+fo=open('student_scores.txt','r',encoding='UTF-8')
+fo_line=fo.readlines()
+infor={}
+for i in range(1,len(fo_line)):
+    name,C,M,E=fo_line[i].strip().split(' ')
+    print(name,C,M,E)
+    infor[name]=(float(C),float(M),float(E))
+print(infor)