Am adaugat materialele din săpt trecute.

python/curs/curs2_intro_sintaxa.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Wed Feb 25 15:17:23 2026
+
+@author: alex
+"""
+
+import math
+
+luna = 13
+permis = 1 <= luna <=12 
+print(permis)
+
+s1 = "Matematica"
+s2 = "info"
+s3 = """Prima
+linie"""
+
+print ("Ana" + " " "Pop")
+print ("=" * 20)
+
+print(len("Matematica"))
+print("mat" in "Matematica")
+
+s = "string"
+s = 'A' + s[1:]
+print (s)
+
+s = "Matematica"
+print(s[0])
+print(s[4])
+print(s[-1])
+print(s[-3])
+
+#slicing s[start:stop:pas]
+
+print(s[0:4])
+print(s[4:])
+print(s[:4])
+print(s[::2])
+
+s ="Buna ziua! "
+t = s.strip()
+print(t)
+t = s.upper()
+print(t)
+t = s.lower()
+print(t)
+t = s.replace('ziua','dimineata')
+print(t)
+
+x = 1
+
+if x>0:
+        print('pozitiv')
+        print('si real')
+print('mereu')
+
+raza = float(input("raza: "))
+pi = math.pi
+
+aria = pi*raza**2
+circum = 2*pi*raza
+
+print(f"aria este: {aria:.4f} m patrati")
+print(f"circumferinta este: {circum:.4f} m")
+
+n = int(input("n: "))
+
+if n == 0:
+    print("n este 0")
+else:
+    if n > 0:
+        semn = "pozitiv"
+    elif n < 0:
+        semn = "negativ"
+    if n % 2:
+        print(f"{n} este par si {semn}")
+    else:
+        print(f"{n} este impar si {semn}")
+        
+n = 100
+suma = 0
+for i in range(1, n+1):
+    suma += i
+print(suma)
+print(n*(n+1) // 2)
+
+for i in range(5, 0, -1):
+    print(i, end = ' ')
+
+for litera in "Math":
+    print(litera)
+    
+a = int(input('a= '))
+b = int(input('b= '))
+
+while b != 0:
+    a, b = b, a % b
+print (f"cmmdc = {a}")
+
+numar = int(input("numarul este "))
+card = int(0)
+while numar != 0:
+    numar //= 10 #doua // inseamna /
+    card = card +1
+print (f"numarul de cifre al numarului este {card}")
+
+x = int(input("x = "))
+if x > 0:
+    print("pozitiv")
+    if x > 100:
+        print("mare")
+        
+
+numar_intreg = 42
+numar_real = 3.14159
+numar_complex = 3 + 4j
+text = "matematica"
+adevarat = True
+
+print(type(numar_intreg))
+print(type(numar_real))
+print(type(numar_complex))
+print(type(text))
+print(type(adevarat))
+
+z1 = 3 + 4j
+z2 = 1 - 2j
+
+print(z1.real)
+print(z1.imag)
+print(abs(z1))
+print(z1+z2)
+print(z1*z2)
+print(z1.conjugate())
+
+n = int(input("Numar: "))
+print(n+1)
+
+nume = "Ana"
+varsta = 20
+medie = 9.75
+
+print("Studentul " + nume + " are " + str(varsta) + " ani ")
+
+print(f"Studentul {nume} are {varsta} ani.")
+
+print(f"Peste 5 ani {nume} va avea {varsta + 5} ani.")
+
+print(f"Dublul mediei este {2 * medie}")
+
+pi = math.pi
+
+print(f"pi = {pi:.2f}")
+print(f"pi = {pi:.5f}")
+
+numar_mic = 0.000001234
+print(f"{numar_mic:.3e}")
+
+n = 1000000
+print(f"{n:,}")
+
+p = 0.8765
+print(f"{p:.1%}")
+
+for i in range(1,6):
+    print(f"{i:3d} | {i**2:5d} | {math.sqrt(i):.4f}")
+    
+
+x = float(input("Introdu un numar real: "))
+if x > 0:
+    print(f"{x} este pozitiv")
+elif x < 0:
+    print(f"{x} este negativ")
+else:
+    print("Numarul este zero")
+    
+n = 10
+suma = 0
+for i in range (1,n+1):
+    suma += i
+    
+print(f"Suma 1+2+3+...+{n} = {suma}")
+formula = n * (n + 1) // 2
+print(f"Formula lui Gauss: n*(n+1)/2 = {formula}")
+
+
+n = int(input("Introdu un numar intreg pozitiv: "))
+nr_cifre = 0
+temp = n
+
+while temp > 0:
+    temp //= 10
+    nr_cifre += 1
+
+print(f"Numarul {n} are {nr_cifre} cifre")
+
+n = int(input("n: "))
+for i in range(1,n+1):
+    if type(math.sqrt(i)) == int(math.sqrt(i)):
+        print(f"{i:3d} | {i**2}  | {math.sqrt(i):.8f}")